“37 mpg is still BS!”
Well, FWIW, I drive my 6-speed, C5 Corvette Coupe between the Bay Area and Monterey (112 miles from one home to another) and am averaging 31 to 34 mpg portal to portal driving between 70 and 75 mph. Mixed highway/city driving still nets 21 to 23 mph ( as long as I don’t participate in any Stoplight Grand Prix). Getting the aerodynamics right is a big factor in milage improvement, and you don’t end up having to drive a golf cart to meet the CAFE standards.
I agree about the aerodynamics. I have a VW CC and a 2013 Beetle convertible. Both have the 2.0T turbocharged 4-cylinder engine. The CC is much heavier, yet consistently gets 33-34 MPG on the highway. The Beetle gets 30 tops (with the top up).
I attribute the difference entirely to aerodynamics. The CC is extremely ‘swoopy’ whereas the Beetle is, well, not.