Two corrections to be made:
First:
LS1 corvettes, camaros and firebirds get between 32 and 36 MPG and average around 20-25 city. That's 5.7 Liters and yet the 370z gets a lot less economy with 2 less liters. Sometimes the size of the engine has nothing to do with the quantity of fuel it burns. In addition, those motors make a LOT more power and torque NA than is at all possible for the VQ37. Boost either of them and the result is the same as NA; the LS1 will make more power and get better economy than the VQ37.
To say that smaller boosted engines are better for economy is making a bold accusation that all larger motors are inefficient and is quite an ignorant remark. (No offense)
Second:
Also, the saying "There's no replacement for displacement" is a saying on the race track. NOBODY on the track cares how much economy they get. If it was a Honda motor tech that were to make a saying, it'd be something like "There's no replacement for direct sequential electronic fuel injection" or something that doesn't really flow well.
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2002 Corvette Z06 - Totaled
2003 Corvette Z06 50th Anniversary
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