My 2017 Acura MDX Sport Hybrid: Three Rows, Three Motors, and One Very Rough Start

 

By late 2024, life was feeling pretty grand. I had my 2023 Tesla Model 3, we had settled into our new house, I was firmly ensconced in my new role as Director of Technology for Tillamook School District 9, and in late October, we had welcomed our amazing second son, Jonah James, into the family.

There was just one thing that no longer quite fit our needs: Courtney’s 2015 Mercedes-Benz ML350 4MATIC.

To be clear, the ML was still a wonderful vehicle. It was beautiful, solid, reliable, and still returned surprisingly decent fuel economy for something so large and heavy. It had done exactly what we bought it to do: bring Wesley home from the hospital, carry our young family safely for several years, and serve as Courtney’s daily driver and our main family vehicle without complaint.

But our family had changed. When Wesley was younger, Courtney could sit in the back seat with him on longer trips and tend to him without us pulling over. With two car seats in the back, that arrangement was basically over. If we wanted one of us to be able to sit with the kids on trips, we needed a third row.

There were other issues too. The Tesla had spoiled me badly with driver-assistance features like lane keeping, adaptive cruise control, and automatic high beams. Those features were available on the W166-generation ML, but ours was fairly lightly optioned and didn’t have them. The headlights had also always seemed subpar at night, which was not ideal for dark, wet, rural Oregon roads. Add in Mercedes maintenance costs, and I found myself ready to upgrade and move on.

To replace it, I initially thought I had found the perfect vehicle. Actually, I had found two: the 2025 Toyota Sienna Hybrid and the 2025 Toyota Grand Highlander Hybrid.

The Sienna was the obvious winner from a practical standpoint. Three rows, sliding doors, excellent fuel economy, Toyota reliability, and room for all the kid gear family life could throw at us. I also thought it was genuinely cool, which probably says something about where I had landed in life by my late thirties. Unfortunately, both vehicles were basically unobtainium. I reached out to several Toyota dealers, and the process was almost comically frustrating. You got on a list, waited for an allocation, and if something arrived that you wanted, the first person to physically show up and put down a deposit got the vehicle. That was not ideal when I lived over an hour away from most of the dealerships.

Then Courtney calmly told me she did not want to buy a brand-new vehicle while she wasn’t working outside the home. Ten years of marriage had finally taught me something important: know when to let it go. So I let it go, and the Toyota search was over.

In my search for a reasonable used vehicle, I stumbled across something I had genuinely forgotten existed, which is rare for me. I have a pretty good catalog of most modern cars stored somewhere in my brain, usually whether I want it there or not. But somehow, the Acura MDX Sport Hybrid had slipped into the forgotten files.

I remembered watching reviews of it when it was introduced, but at that point I had only been married for a year or two and was nowhere near needing a three-row SUV. I was also absolutely nowhere near being able to afford a roughly $50,000 Acura. Apparently, my brain decided that information was not immediately useful and dumped it.

Rediscovering it years later, though, I realized it might be a great fit. We had loved our 2005 Acura TL, and Honda/Acura reliability was legend—wait for it—dary. The MDX Sport Hybrid had meaningfully better fuel economy than the Mercedes, the safety and driver-assistance technology I wanted, strong safety ratings, reasonable maintenance costs, and a third row that looked usable enough for our needs.

Most importantly, it was the sporty hybrid. Not the maximum-fuel-economy hybrid, not the slow hybrid, and not the hybrid that existed mostly for marketing purposes. The MDX Sport Hybrid used a naturally aspirated V6 up front, a dual-clutch transmission, and electric motors in a way designed to improve both efficiency and performance. It also had Acura’s Super Handling All-Wheel Drive system, which was not just marketing fluff. The rear electric motors could actively distribute torque side to side, helping the vehicle rotate through corners in a way that a normal three-row SUV simply does not.

That appealed to me a lot. If we were going to replace the German tank, I liked the idea of doing it with something a little unusual, a little more efficient, and genuinely interesting to drive.

I eventually found “the one” at Acura of Portland. It was a 2017 MDX Sport Hybrid Advance with about 60,000 miles, freshly traded in. The Advance package meant it had the equipment I wanted: adaptive cruise control, lane keeping assist, blind spot monitoring, parking sensors, ventilated front seats, heated second-row captain’s chairs, a heated steering wheel, and a surround-view camera system. In other words, it had basically all of the things our lightly optioned ML350 did not have.

It had been traded in so recently that when I showed up to drive it on the last day of December 2024, even though I had made an appointment, it had not been detailed yet. That was not ideal, but I took it for a test drive anyway and liked it well enough. It was comfortable, quiet, and obviously much more modern than the Mercedes. The transmission was a little jerky, but I put that down to the hybrid system doing its thing. Between the V6, the dual-clutch transmission, and the electric motors, there was a lot going on mechanically.

After the drive, I negotiated what I thought was a pretty good discount. Then, at the last minute, I did something I had never done before: I bought an extended warranty.

The asking price for the bumper-to-bumper three-year, 36,000-mile warranty had originally been about $4,500, which was absolutely not going to happen. Fortunately, I had already contacted my credit union and had a warranty quote for about $1,500. I told the dealer that. What I did not tell them was that the credit union warranty did not cover the hybrid battery, while the dealer’s warranty did. They countered at $1,900.

For a rare hybrid SUV with all of the optional equipment, that felt reasonable. This was not a simple old Honda with a four-cylinder engine and roll-up windows. It was a three-motor, all-wheel-drive, dual-clutch, luxury hybrid SUV with a lot of expensive parts. For $1,900, three years of peace of mind seemed worth it.

A few days later, I came back to pick up the MDX. It was not ready. Instead, I spent about two hours waiting for them to finish detailing. So much for the premium buying experience.

Eventually, the Acura was finally ready, and I headed toward McMinnville to run an errand at Roby’s. About thirty minutes into the drive, disaster struck. I had already noticed a couple of harsh transmission shifts and figured I’d have the dealer look at them later. Along with the extended warranty I’d purchased, Dick Hannah Acura had included a three-month, 3,000-mile powertrain warranty, so I wasn’t especially worried.

The Acura had other plans.

I was on a Portland freeway in the left lane of a busy three-lane stretch with no shoulder when a warning flashed across the dash: Battery Output Low. Stop Driving When Safe and Shift to Park.

Uh oh.

Almost immediately, the MDX began losing speed, even with the accelerator floored. Somehow, I managed to fight my way across three lanes of traffic and onto the narrow right shoulder. Another warning appeared: Low Battery Charge. Vehicle Performance Limited.

Looking at the map on my phone, I spotted an exit just ahead with a Walgreens just beyond it. The MDX would still creep forward, so I cautiously made my way up the shoulder, slipped onto the offramp, and thought I might actually make it.

Then it stopped dead.

The transmission dropped into Neutral, and the dashboard displayed N. I frantically stabbed the Park and Drive buttons, begging my brand-new-to-me luxury hybrid to move. After what felt like an eternity—but was probably only ten seconds—it finally lurched back into gear.

I limped into the Walgreens parking lot and sat there for several minutes, hands shaking.

When I called Justin, the used car manager at Acura of Portland, he immediately apologized and went into action. Before the tow truck even arrived, he’d sent a porter with a used 2023 MDX so I could continue my trip while my disabled Sport Hybrid was towed back to the dealership.

It was an awful experience, but Justin handled it exactly as you’d hope. He moved quickly, kept me from being stranded, and even made it clear that if I preferred, I could simply return the MDX for a full refund.

Looking back, I am not entirely sure why I didn’t just do that. The logical move probably would have been to hand them the keys, take the refund, and be done with it. But the MDX Sport Hybrid had been a good deal, they were hard to find, and I wanted to know what had actually gone wrong before making a final decision. I also knew I had the option to return it if the diagnosis was bad or the repair plan didn’t make sense.

So, for reasons that seem a little questionable in hindsight, I decided to let it play out.

Over the next few weeks, the Acura went through diagnostics. The MDX Sport Hybrid was rare enough that Acura of Portland had apparently only had one other one in the service bay before, which was not exactly reassuring. At first, they thought a weak 12-volt battery might have caused a strange low-voltage error, but ruled that out. Then they suspected the hybrid battery, but that checked out too. Eventually, Acura brought in a hybrid specialist from corporate to look at it, and the diagnosis finally came back: the hybrid transmission was at fault.

The proposed solution was not a software update, a sensor, or some small internal repair. It needed a brand-new replacement transmission.

I told them to go ahead, but I also made one thing clear: when I got it back, I wanted the option to drive it for a few days before deciding whether I was actually keeping it. After the way it had failed on the freeway, the MDX had to earn my confidence.

The transmission was replaced, and Acura of Portland delivered the MDX to our house while collecting the 2023 MDX we had been driving for the past month. Then I spent the next week driving the Sport Hybrid as much as I could.

Oh, what a machine.

It was immediately obvious that something had been wrong with the original transmission. With the new one, the MDX was buttery smooth. It transitioned seamlessly between gasoline and electric power, and most of the time the only way to tell the engine had turned on or off was by watching the center display or noticing the tachometer drop to zero.

It was also, by far, the quietest vehicle we had ever owned. The Mercedes ML had felt solid and substantial, but the Acura felt more composed. The ML had a tendency to rock back and forth over certain bumps and road surfaces, while the MDX felt planted and controlled. The adjustable suspension made that even better. With the push of a button, I could make the ride softer or sportier, and the steering weight changed with the drive mode too.

And this was a fast hybrid. Not “fast for a three-row family SUV” in a polite, qualified sense. Actually fast. Its 0–60 time was around 5.9 seconds, just a tenth slower than my 2023 Model 3 Rear-Wheel Drive. That is ridiculous for a family crossover with a third row, a naturally aspirated V6, and car seats in the back.

Fuel economy was also a major improvement. We averaged around 26 MPG, compared with roughly 20 MPG from the ML350 and 17 MPG from the loaner 2023 MDX. The newer regular MDX was a nice vehicle, but after living with the Sport Hybrid, it felt less special. The older hybrid was quieter, smoother, quicker, and more efficient.

After a week of driving it, I had my answer. We were keeping it.

We have now owned the MDX Sport Hybrid for about a year and a half, and since the transmission replacement it has been completely flawless. Not one issue. Not one glitch. It has been in for standard service once, and if I remember correctly, that was somewhere around $250. Compared with the maintenance costs of the ML350, that felt almost suspiciously reasonable.

Today, it is still our active family vehicle whenever we need more space than the Model 3 can provide. It is also our winter and bad-weather vehicle, especially when we need to drive over Highway 6 in dicey conditions. We have a set of snow tires for it, and between those, the hybrid system, and Acura’s Super Handling All-Wheel Drive, it inspires a lot of confidence.

So, with the MDX, we have reached the end of our current daily drivers. The Tesla and the Acura are the two vehicles that still handle most of our family’s real-world transportation needs.

But we are not quite at the end of this COAL series. There are still three vehicles left to talk about.

Next week: an unexpected car that came to me when I needed it most.