Deltona Couple

I work for GM, where is your evidence to prove it requires premium? That is an all out falsification, it needs only regular unleaded(87 octane)

Again, I work for GM, and the Aveo is fully able to maintain the higher mileage. You need to go back and check sources as to where the manufacturers calculate their mileage. If you check, you will find that the government is working on a standard of which ALL manufacturers will have to follow. As it is currently, each manufacturer has their OWN basis for calculations.

Now instead of just spouting off information, here is my research on the comparison.

http://www.newcars.com/review_model/...do%201500.html


Chevrolet Silverado Toyota Tundra
Engines

Chevy Silverado
-4.3L V-6 (late availability) 260 hp/275 lb-ft
-4.8L V-8 (base engine, cast-iron) 295 hp/305 lb-ft
-5.3L V-8 (cast-aluminum block) 315 hp/338 lb-ft
-5.3L V-8 (cast-iron block) 315 hp/338 lb-ft
-6.0L V-8 (cast-iron block) 367 hp/375 lb-ft
-6.2L V-8 (cast-aluminum block) 400 hp/415 lb-ft (rumored for late usage in a performance package) -

Toyota Tundra
-4.0L V-6 (cast-iron block) 236 hp/266 lb-ft (2006 numbers)
-4.7L V-8 (cast-iron block) 271 hp/313 lb-ft (2006 numbers)
-5.7L V-8--Not much is known yet, but we'll assume this'll be one of the most sophisticated truck engines around. Like Nissan's DOHC 5.6L V-8 (320 hp/385 lb-ft), the Toyota engine will have four valves per cylinder.

Look at the numbers... Specifically the highlighted ones. Even GMs 5.3 litre engine has only a 5 HP rating less than Toyotas 5.6 litre.

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