I'm a little behind in getting these together, but they should be in the "Reviews Tab" sometime soon...
Vehicle: 2006 Chevrolet Impala 1LT, 3.5L
The pushrod engines in these Chevys continue to catch me by surprise. The advantage to these larger displacement, overhead-valve-style engines is their torque; moreover, the cars themselves have become more aerodynamic for high-speed use. As with most Chevys, expect low quality and questionable reliability. This particular car is a huge improvement over the last model. I didn't like renting the previous generation Impala at ALL -- it was exciting as an insurance seminar. The new one still blends-in, but offers a much nicer interior and handling response. The radio shows your preset stations, and stores up to 24. Steering wheel controls are a nice touch.
CAUTION: The Impala is available with 3 engines: the base 3.5L V-6, the 3.9L V-6, and the V-8 in the SS. Both the 3.5 and 3.9's data will be posted to show the differences. Despite the throaty growl and dual-exhaust, the 3.9 offered no appreciable advantage in power-response.
Pluses and Minuses:
+ Roomy, Comfortable Interior
+ Great FE for Vehicle Size (Large Car Class)
+ Much Improved Exterior Sheetmetal
- Good ol' 4-Speed Auto (will this ever go away?)
- Fleet Sales decrease Re-Sale
- More reliable vehicles are out there
Raw Data:
Model: 2006 Chevrolet Impala
Trim: 1LT
Transmission: 4-speed Auto/LUTC
Engine: the magical 3.5L, OHV, V-6 that powers the Malibu as well, rated at 211 HP, and 214 lb-ft torque
Drivetrain: FWD
EPA: 21/31/24
GasSavers Tested Mileage: 28.7 MPG
Speed Avg: 52 MPH
Time: 6.2 hours
Miles: 330
Ambient Outside Temp: 60-90F
FE Conclusion: Right on the Money
Now, to contrast, take the same car and use the following:
Trim: LTZ (2LT offers 3.9L as well)
Transmission: 4-speed Auto/LUTC
Engine: 3.9L, OHV, V-6 - rated at 242 HP and 242 lb-ft of torque
Drivetrain: FWD
EPA: 19/27/22
GS FE: 25 MPG
Avg Spd: 55 MPH
Time: 3.1 Hours
Miles: 172
Temp: 80-95.
FE Conclusion: EPA Accurate, but no advantage over the 3.5L