What a difference nearly three decades make, or does it? Produced for 28 years with minimal enhancements, the GM W-body lived an unusually long life in many forms. This 1989 Pontiac Grand Prix LE coupe’s body was present at the start in 1988, and this 2006 Chevrolet Impala LT’s body was around in the platform’s swansong year of 2016, making them visual bookends in some sense.
(Update: to make this comparison a bit easier, I’m adding these profile shots of an early W GP and a late W Impala. The basic hard point similarities are quite obvious, especially at the cowl, and its relation to the rest of the car. The belt line at the doors has been raised, but that’s not really a very fundamental architectural change. The roof line at the rear is a bit further swept back, and the Impala has an extra 3″ of wheelbase, obviously added at the rear to increase rear seat room. I actually see a lot more fundamental similarities than differences. – PN)