The 1975 model year was the end of the line for an American institution: the full-size, six-passenger, mass-market convertible. Once a fixture of nearly every American car line, the domestic convertible fell victim to slumping sales and new federal safety regulations, which made it unsustainable by the mid-1970s. GM was the last holdout, and Chevrolet, Pontiac, Oldsmobile, and Buick all fielded their last big B-body convertibles for 1975. Here are examples of each of those final-year ragtops.
Over the years, the demise of the domestic convertible has been blamed on many things, from the growing popularity of air conditioning to worsening air pollution to specialty hardtops gradually usurping the convertible’s traditional role as glamour leader. Whatever the reasons, by 1970, the number of convertible choices had been pared back considerably, and some domestic marques had either dropped them completely or were preparing to do so.
There would still probably have been enough demand to keep at least a few domestic convertibles on sale through the ’70s, but by the time the 1971 models went into production, there was a new complication: Federal Motor Vehicle Safety Standard (FMVSS) 208. In May 1970, the Department of Transportation (DOT) announced a revision to FMVSS 208 that called for improved occupant protection in several types of crashes, including rollover accidents. This revised rule was finalized in March 1971, with an effective date of August 15, 1975. It didn’t explicitly outlaw convertibles, but since there was no obvious way for a soft top convertible to meet the rollover protection requirements (except perhaps with a permanent roll bar), it amounted to the same thing.
DOT followed the FMVSS 208 rollover rules with another new rule, the FMVSS 216 roof crush resistance standard. If the rollover standard was difficult for convertibles to meet, the roof crush rule was plainly impossible. The department conceded that point during the comment period, so the final rule, issued in December 1971, specifically exempted convertibles and included a provision that also allowed convertibles to avoid the FMVSS 208 rollover requirement for two additional years, until August 15, 1977. However, soft top convertibles were now clearly living on borrowed time so far as U.S. safety regulations were concerned.
For Detroit automakers, it was the last straw. There might conceivably have been some whizzy high-tech solution to the rollover standard, like a roll bar that would automatically pop up behind the front seats if the car tipped over too far, but convertible sales were now much too limited to justify that kind of R&D. In fact, even when U.S. automakers, led by Chrysler, went to court to challenge other parts of the revised FMVSS 208 rule, they remained completely silent on the issue of convertibles, although a group of foreign automakers did petition the court to weigh in on the regulation’s impact on convertibles and sports cars.
Once the rollover requirement was announced, any remaining development work on new domestic convertibles ceased. After 1971, the only U.S. drop-top models left were ones for which the manufacturers had already paid for the tooling, including the Ford Mustang and Mercury Cougar, the Corvette, the Cadillac Eldorado, and the GM B-body full-size cars. Ford and GM accepted that these remaining convertible models had no future, but they didn’t immediately discontinue them because all of them except the Corvette had just been redesigned for 1971 — the manufacturers wanted to get as much of their tooling investment back as they could before the new safety regulations brought down the curtain for good.
GM had dropped its bigger C-body convertibles (in the Oldsmobile Ninety-Eight, Buick Electra 225, and Cadillac De Ville lines) after 1970, so from 1971 on, all its remaining full-size convertibles except the Eldorado used the B-body. (The E-body Eldorado had some commonality with the B-body, but GM considered it a separate entity.) Since the B-body was shared by Chevrolet, Pontiac, Oldsmobile, and Buick, this meant GM had four full-size convertibles. In fact, since Pontiac and Buick each initially offered their convertibles in two different trim series, for a while, there were actually SIX different B-body convertible models.
You might be wondering, “If convertibles were selling so badly by this time, why on earth did GM still have so many of them?” This will start to make a bit more sense if you understand how most GM cars of that era were actually made. Back then, each car division (Chevrolet, Pontiac, Oldsmobile, Buick, and Cadillac) was responsible for the chassis, the engine, the front fenders, the grille, and the hood. The car divisions purchased most other mechanical components from GM supply divisions like Saginaw and Hydra-Matic, and bought their fully trimmed bodies — everything from the windshield back, including interior trim — from Fisher Body Division.
On each of the body lines (A-body, B-body, and so on), most of the inner structure and glass was the same across all versions. Corporate management allotted each division a budget to have Fisher Body tailor that shared body shell in various ways, such as giving it different fenders, different taillights, a different dashboard, and different upholstery choices. However, the complex metal stampings under the skin were largely identical, which made it possible for Fisher Body to get the most use out of the enormously expensive tools and dies needed to mass-produce auto bodies. GM’s profit margins depended on getting the highest possible volume out of that tooling, which sometimes meant that the divisions had to share certain things whether they wanted to or not.
There was still SOME demand for full-size convertibles in the early ’70s. However, it wasn’t enough to make them profitable — by GM standards, at GM prices — unless most or all of the divisions offered them. Individually, none of the other divisions sold enough convertibles to bother with. Together, however, they could sell an average of around 20,000 a year, which was at least enough to cover the tooling costs. (The situation was a little different for the Eldorado convertible because Cadillac could get away with charging a lot more for it; if the other divisions had tried that, it would just have depressed sales even further.)
Thus, between 1971 and 1975, you could still take your choice of Chevrolet, Pontiac, Oldsmobile, or Buick full-size convertibles. The divisions didn’t seem to have been any too happy about this: While it was better for Fisher Body and the corporation for each division to have its own B-body convertible, the divisions were still responsible for their own profit and loss, and it was hard to make a profit on convertibles when their individual sales now seldom topped 7,000 cars a year. Whenever reporters came around asking for quotes for their feature stories about the imminent death of the great American convertible, division officials would glumly reiterate that there just wasn’t any market for convertibles anymore.
By 1973, Chevrolet, Pontiac, and Buick had all concluded that it made no sense to offer convertibles in anything other than their priciest B-body trim series. (Buick did go back to offering the convertible in the LeSabre Custom line for 1974, but only because they had completely dropped the more expensive Centurion series.) The move upmarket turned out to be a smart decision commercially: The divisions could charge more for a Caprice Classic or a Grand Ville than for an Impala or a Catalina, and it seemed to have little effect on sales.
The 1975 versions of these cars were more alike than different under the skin, but each had unique styling and somewhat different exterior dimensions. Here’s how they compared:
| 1975 Dimensions | Overall Length, In. | Wheelbase, In. | Width, In. | Track, Front, In. | Track, Rear, In. | Base Price |
|---|---|---|---|---|---|---|
| Buick LeSabre Custom | 226.9 | 124.0 | 79.9 | 63.6 | 64.0 | $5,133 |
| Chevrolet Caprice Classic | 222.7 | 121.5 | 79.5 | 64.1 | 64.0 | $5,113 |
| Oldsmobile Delta 88 Royale | 226.9 | 124.0 | 79.9 | 63.7 | 64.0 | $5,212 |
| Pontiac Grand Ville Brougham | 226.0 | 123.4 | 79.6 | 63.8 | 64.0 | $5,858 |
Surprisingly, three of the four B-body convertibles were very similar in price, and the most expensive in base price terms was actually the Pontiac Grand Ville Brougham, which had more standard equipment, including a 400-cid V-8 linked to TH400 Turbo Hydra-Matic. (The pictured Caprice, Delta 88, and LeSabre each have their division’s 350-cid V-8 and TH350 automatic, although bigger, more powerful engines were still optional on all four cars in 1975.)
There wasn’t much to choose between these convertibles in interior space or features. Power steering, power brakes (with front discs), automatic transmission, and a power top were standard across the board, although only the Grand Ville Brougham included power windows as standard. Air conditioning (manual or with automatic climate control) was optional on all, but nearly always specified. Bench seats were mandatory; a split bench seat was a desirable $81 option.
It was still possible to order cloth upholstery on these convertibles, but all-vinyl upholstery was much more common, since it was more durable, especially if you got caught in a sudden rain shower before you had time to put the top up.
For what it’s worth, I prefer the flossier Pontiac interior. Its “wraparound” dashboard treatment wasn’t really any more functional than the others, but it had a bit more character.
I could say the same thing about the Grand Ville’s button-tufted vinyl seats: They were a bit contrived, but they added more of a sense of occasion to this rather expensive car.
By comparison, the ribbed vinyl upholstery of the Chevrolet and the Oldsmobile seemed rather bland, although the Caprice Classic and the Delta 88 Royale were both significantly cheaper than the Pontiac.
The Buick had slightly nicer upholstery than the Caprice or Delta 88, although the upholstery on this particular LeSabre is looking a little the worse for wear.
Also, the shiny Buick silver-faced speedometer didn’t seem like the greatest choice for a convertible.
I find the LeSabre the most attractive of the four on the outside, especially with Buick’s signature chrome-plated wheels, although the grille strikes me as a little too Plymouth-like in this league.
However, Chevrolet, Olds, or Pontiac loyalists really had nothing much to complain about in the exterior styling department. They weren’t exciting, but these were all reasonably handsome cars, although their gargantuan size was a handicap in tight quarters or at the gas pump.
Although the oil embargo had knocked the wind out of most 1974 new car sales, business picked up for 1975, and interest in the convertibles increased somewhat as people realized 1975 would be the last year for most of them. Late in the model year, there was a bit of a rush as buyers who wanted a convertible scrambled to get one before they were all gone.
However, the final sales tallies were still negligible by GM standards. The bestseller of the 1975 B-body convertibles was the Caprice Classic, which sold a modest 8,349 cars. The far-pricier 1975 Eldorado convertible actually sold better (8,950 cars), which had a lot to do with why Cadillac decided to keep it around for one final season.
GM had no serious plans to offer convertible versions of the downsized full-size cars that would arrive for 1977, but Chevrolet, Pontiac, Oldsmobile, and Buick could have continued to offer their B-body convertibles through 1976 if they had wanted to, taking advantage of the same FMVSS 216 exemption Cadillac used for the 1976 Eldorado. However, that would really only have made financial sense if all four divisions were onboard, and I don’t think they were. Sales had fallen to a level where it was all or nothing, and it was easier and more profitable to choose nothing.
None of the divisions seemed all that terribly sentimental about the demise of their full-size convertibles. The closest any of them got to a big sendoff was when Buick sent a batch of 40 decal-festooned white LeSabre convertibles to the Indy 500 festival committee in spring 1975. One unnamed GM official told the Associated Press in March 1975 that when the full-sized convertibles were finally gone for good, the only people who would be bothered would be parade organizers. That was an exaggeration, of course, but the sales figures made clear that the number of people who liked the IDEA of a big convertible greatly outnumbered those actually willing to buy one.
So, except for the Eldorado, GM wrapped things up at the end of the 1975 model year — just before the effective date of the new FMVSS 208 standard, which GM had originally assumed would have to be the deadline. Total production of all the 1971–1975 B-body convertibles was just shy of 100,000 cars, which I suspect was the target GM was shooting for.
| Year | Chevrolet Impala | Chevrolet Caprice Classic | Pontiac Catalina | Pontiac Grand Ville | Oldsmobile Delta 88 Royale | Buick LeSabre Custom | Buick Centurion | Total |
|---|---|---|---|---|---|---|---|---|
| 1971 | 4,576 | 2,036 | 1,784 | 2,883 | 1,856 | 2,161 | 15,296 | |
| 1972 | 6,456 | 2,399 | 2,213 | 3,900 | 2,037 | 2,396 | 19,401 | |
| 1973 | 7,339 | 4,447 | 7,088 | 5,739 | 24,613 | |||
| 1974 | 4,670 | 3,000 | 3,716 | 3,627 | 15,013 | |||
| 1975 | 8,349 | 4,519 | 7,181 | 5,300 | 25,349 | |||
| Total | 11,032 | 20,358 | 4,435 | 15,963 | 24,768 | 12,820 | 10,296 | 99,672 |
Convertibles didn’t go away when the last domestic automakers got out of the game. In December 1972, a federal court had ruled that DOT didn’t have the legal authority to outlaw convertibles and open sports cars by setting rules that those models obviously couldn’t meet. The court ordered DOT to revise the occupant rule accordingly, although the department didn’t actually do that until July 1977. The revised version of FMVSS 208 permanently spared convertibles from the regulatory chopping block, but rather than simply exempting open cars from the rollover requirement, which might have made sense, the new rule essentially made the side-impact and rollover standards elective, so no one would get rollover protection unless the manufacturer graciously chose to provide it. (So much for passive safety.)
Starting in 1982, U.S. automakers began selling convertibles again, although to limit the tooling investment and avoid production tie-ups, they were often outsourced to outside coachbuilding firms. The selection was also much more limited than it had been in the late ’60s or early ’70s. Many open cars of the ’80s were 2+2s or two-seaters — new convertibles with a back seat bigger than a mailbox had become a rare luxury. The traditional six-passenger, full-size convertible never returned, even while traditional six-passenger, full-size cars were still generally available.
I think a lot of the people who bought these final B-body convertibles expected that they would become collector’s items, which they eventually did. Given the low production, the number of well-kept, relatively low-mileage survivors seems to be pretty good; the survival rate of the convertibles is clearly much better than the sedan or hardtop versions. Prices seem to be rising as well. Of the 1975 convertibles pictured in this post, only the LeSabre sold for less than $20,000 (it went for $11,875 in July 2025), and both the Caprice and the Delta 88 went for more than $35,000.
Related Reading
The Last Full-Size Convertibles – The End Of An Era (by William Stopford)
Did Air Conditioning Kill The Convertible? (by me)
1975 Oldsmobile Delta 88 Royale Convertible With A Pontiac 400 V8: Is This GM’s Most Forgotten Hybrid? (by Aaron65)
Curbside Musings: 1975 Chevrolet Caprice Classic Convertible – Bigger Than Your Appetite (by Joseph Dennis)
CC Outtake: 1975 Buick LeSabre Convertible – A Topless Exit (by Brendan Saur)
Curbside Capsule: 1975 Buick LeSabre Custom Convertible – SHE LUV U (by Joseph Dennis)
Cohort Pic(k) of the Day: 1975 Pontiac Grand Ville Convertible – Looking Right At Home In The Netherlands (by Paul N)
I have a hard time relating to the idea of actually buying one of these in 1975. But it’s a big country and there were a lot of older guys looking to relive their youth in a big rag top.
I really enjoyed this informative article because convertibles in general are dear to my heart. I feel fortunate to have been a child in the 1950s, in a family who loved convertibles having bought a new 1955 Olds Starfire and a new 1960 T-Bird convertible. In the neighborhoods where I grew up convertibles were not all that rare. My Mom was the parent who preferred convertibles the most but starting in the 1960s hair styles became teased bigger and harder to cover with a silk scarf regardless of the amount of hair spray applied. But my love of big open top cars never diminished.
I started college in 1969, and after disagreements with Dad I dropped out in 1972, and worked as a bartender at a Miami Beach disco. By 1974, I found it advisable to leave Miami fast, so decided to return to college in another state to the relief of my parents. My college of choice would be out of state from my parents home (again). My parents were generous, and I could pay my own way through college, so they decided I needed a newer car than my 1970 Nova SS 396, visit them more often was the idea. I only had a few days to buy something new off the lot and I wanted a convertible, and as this article indicates there were not a lot of choices for fully optioned convertibles on the lots. The only car I found on a dealer new car lot was a 1974 Buick LeSabre convertible, loaded with options, a bronze color with tan interior. Nice, comfortable, full size, but not a car I was passionate about. Come 1975, when I first saw the revised Eldorado convertibles it was love and passion at first sight. I won’t go into details but I was fortunate to give my Buick to someone else for a new white 1976 Eldo convertible. It was my dream car at the time and not because it was a Cadillac, not because it was suppose to be the last of the convertibles, I just fell in love with the convertible body style, a passionate response. I ordered my 1976 Eldo in 1975 just the way I wanted it with all the options, white with my favorite red interior. I drove that car for ten years and 100,000 miles and enjoyed every top down mile.
The following decades I have bought other new cars that I loved and enjoyed but none replaced that top down experience. About twelve years ago, entering my second & late middle age crisis, my older brother told me I was getting too old to wait any longer for one last convertible. Another Eldo? Nope, back to my roots with T-Birds so I got a 1966 convertible. I continue to enjoy every top down ride. However, I now keep sun-screen in my Bird.
If I had a big pole barn that was itching to be filled with 15 or so cars and other detritus, I’d be interested in looking at adding one of these to that fleet. But I would have less than zero interest in the tin-top version of any of these, it would absolutely have to be the convertible. And of the bunch, the Buick would be the pick by a long way. Probably the Olds in second, then the Pontiac and the Chevy. No interest in the ElDorado even if the barn was twice the size, I’d want to go back to an older C-body for that.
I’ve often recounted my tale of being a rear seat passenger in a 1972 Buick Centurion convertible at extra-legal highway speeds. It was rather miserable, but even with the top and windows up, it was no picnic. With the advent and expansion of the Interstate Highway System (and also the rise in the take rate of air conditioning), sales of big American convertibles were already falling prior to the discussions that would become FMVSS208. I would contend that even if rollover standards were never even discussed, the large American convertible would have met its demise around the same time.
I call these things “David Lynch specials” since he a penchant for using then in his productions. A maroon Olds convertible was driven by Kyle MacLachlan in Blue Velvet, and a blue Caprice just like the one pictured was driven by Laura Palmer’s father in Twin Peaks.
AFA styling goes, I’ll take the Pontiac.
It’s also worth mentioning that these cars had a fully electric top mechanism, no hydraulics at all.
An article on the top mechanism would be nice. Retaining the full size back seat was clever.
The “Olds” or the “Chevy” would be my pick here. ((no white, interior though))
I agree with Evan that the turbulence in the back seat was too much in one of these. Even the intermediates were rough. But as a driver, I’m a convertible man and I was never without one from 1974 until 2018. Most were two-seater sports cars although I did go as large as a Chrysler 300. A change in residence in 2018 meant that I had to downsize to one car and that it had to be a wagon. I still itch for the top down experience on a Summer evening or a Spring afternoon.
Of the cars here, my choice is the Chevrolet. The front of the Buick is too plain. Plymouth-like is a good description. I don’t like the styling of the other two. If I was ordering back then, it would be red over white. The sun makes darker vinyl / leather interiors unbearable and probably none of these offered cloth because it soaks up rain.
As it says in the text, all of them did offer cloth seats, although they don’t seem to have been very common.
My dad had a newly divorced 60 year old friend who bought a ’73 Caprice convertible, red with white interior and top. My dad had a fit that it had A/C. He was your typical owner.
I like them all but I think the Buick has really good lines that win me over. For all the faults of the 71-76 B bodies they made for great convertibles, I wouldn’t even consider a coupe or sedan variant of any. Personally the 6 passenger full sizers is the only form of a convertible that is appealing to me, they’re like being in a big cigarette boat on pavement. In contrast open top motoring in small sports cars doesn’t appeal to me at all, I’d rather have a roof for the spirited driving they encourage, but with these sorts of cars just sit back and cruise leisurely in the breeze.
I think the front end of the Olds has a nice mix of sport & luxury and it shows a little restraint. Maybe the red helps too. These all give off Mike Brady vibes. The Hunter S. Thompson Fear & Loathing convertible was a big Chevy. Didn’t it come up for sale recently?
I missed that, but it did indeed: It went for $254,000 at Christie’s in March. https://www.christies.com/en/lot/lot-6573423
Twenty seven years later, both GM and Ford created a couple of interesting concept cars that were aimed squarely at reviving the big, domestic, full-size convertible market: the 2002 Chevy Bel Air and Mercury Marauder.
Unfortunately, the failure of the new, retro 2002 Thunderbird in the marketplace ended any thoughts of either of the concept cars actually making production. Instead of the Bel Air, GM went with the ill-conceived, quasi-pickup Chevy SSR folding hardtop pickup, an oddball niche that seemed to be aimed at the Plymouth Prowler crowd of which no one was particularly interested.
Likewise, the Marauder convertible ended up morphing into a much easier (and cheaper) to execute 2003-04 sedan based upon the Panther Grand Marquis, the performance of which wasn’t great, with its smallish 4.6L DOHC engine. Maybe if they’d, instead, used the larger 5.4L.
A real pity since, today, the likelihood of ever seeing anything resembling one of those final, big, mid-seventies, domestic convertible boats is virtually zero.
Yeah, I remember those. I don’t think the Bel Air worked even as a concept car: It looked bitty, and it didn’t look particularly like a ‘classic’ Chevrolet, more like a Mitsuoka pastiche of a JA-body Chrysler Sebring convertible. The Marauder was hampered, I think, by the lingering cop-car vibes of the related Panther Crown Vic, and, like the Retro ‘Bird, by the feeling that Ford was unlikely to spend the kind of money to not make it feel half-assed, especially on the inside.
(The concept car also had the 4.6L V-8, but it was supercharged, which would at least have been interesting.)
I had actually forgotten about the Bel air concept but yeah as a 50s retro convertible it undoubtedly would have done about as well as the Tbird.
I had forgotten the Marauder convertible concept predated the actual Marauder sedan, in my head it was more concurrent. Nevertheless I’m not as certain it was that serious of a concept than to draw eyes to the production model.
As for the production Marauder the 4.6 wasn’t really the problem, in fact its performance is pretty comparable to the 90s Impala SS it was clearly a belated answer to with over 1 liter less in its displacement. The real drawback was it didn’t get the intended 4.10 gears, the exhaust was standard P71 fare and the tune was very conservative. The 5.4 had more displacement and torque but it wasn’t a powerhouse, and unlike the DOHC 4.6 they used cast iron engine blocks adding over 100lbs of extra weight.
Great informative article! I am a long time fan of these late drop tops, to the point that I even owned one for a few years. I was only 21 and found a nice original owner 75 LeSabre, mostly original and in good condition. It had been repainted red over the original white, but it was a good quality job. It had a 455, so even with malaise-level output, it could get out of it’s own way at least. I paid $3600 in 1992 and sold it 3 years later for not a lot more. Even adjusted for inflation, that’s probably a lot less than the same car in the same condition would cost today.
I still like the Buick best of the four, though I’d be interested in a nice example of any of them.
If I recall, the ’75 leSabre convertibles had the hard “parade boot” cover for when the top was down. Very spiffy! The example here does not have that.
Here’s a Majestic Blue LeSabre Custom with the body-color fiberglass boot. The listing this came from has a repro of the window sticker that lists it as the Y8 Customline Cover, which was a $45 option. So, it was not standard, but it wasn’t very expensive either.
In terms of overall styling, the Buick is my favorite even if the front is somewhat plain.
Buick for me, white with burgundy is a nice combination, and the chrome wheels seal the deal,.
I consider the Plymouth like front a bonus, and nice price for a Buick.
You could have included the Eldorado in this as the 1971-8 Eldos (and Toronados and 1971-6 Rivieras) were really just Special B bodies. otherwise Cadillac could never have afforded to offer an Eldo convertible – they dropped the C body one for 1971 (De Ville, along with Buick’s Electra 225 and Olds’ Ninety-Eights) supposedly due to low sales even though there were around 20,000 De Villes convertibles sold in 1970, Remember the C bodies were actually not much more than B bodies with an extra three inches of wheelbase added by pulling the rear wheels back, although Cadillac had an extra 3 inches by pulling the front wheels forward (which is how the BOP B body cars had a longer wheelbase than the Chevrolets). None of the C bodies of this generation (all hardtops from 1971 as the regular four door sedan versions were dropped too) had any more interior space than the same bodystyles in the B bodies!
Convertibles are, in a single word, wonderful! In two words, Absolutely wonderful! To be able to drive with the top down on a pleasant day or a summer evening is an experience that you simply cannot get in a closed car, even with all of the windows down.
I purchsed my first convertible, a 1959 Ford Fairlane 292 V8, for $235 in 1967 after graduating from Michigan State and starting my first job. I was hooked!!! I have always owned at least one convertible ever since. At one point all three of our cars were convertibles. I have had full size (Ford Galaxie 500), mid size (Mercury Montigo), sports (a Corvette for 39 years) and a couple of sporty Mustang Cobras. My current, and likely final as I am 82 now is a 2012 Mustang Shelby GT500 which I love!
After 59 years of continous convertible ownership, I still love to drive with the top down! There is nothing like it, except a motorcycle.