Depends on model, configuration, and specs.
With the cab fairing up top on the midroof, the aerodynamics should match, and there'll no MPG difference.
Some of many are 2012 BMW 650i Convertible 16 MPG City /24 MPG Highway,2012 Cadillac CTS Premium 18 MPG City / 27 MPG Highway,2012 Buick Enclave 2WD Premium 17 MPG City /24 MPG Highway.
Does the truck have a Detroit in it.
Can you please rephrase your question and post again.
There are many efficient cars out on the market today. The best MPG car you can buy at the moment is the 2012 Smart For two Coupe at $347/MPG. Coming in next is the 2012 Nissan Versa Manual at $366/MPG.
THe MPG of the Subara Impreza is 25 in city driving and 34 MPG during highway driving. The combined MPG for the 2012 Impreza is 28.
Most of the newer trucks average around 6 mpg. My 1984 International Cabover with a 300hp BC3 got 5.5 mpg and my 1985 Freightliner Cabover with a 3406 310hp caterpillar got closer to 6 mpg. My 1996 Peterbilt 377 got a lifetime average of 7.3 mpg with a S60 Detroit 500 hp.
The EPA mileage estimate for the 2012 Suzuki Kizashi is 21 mpg in the city, 31 mpg on the highway.
The EPA mileage estimate for the 2012 GMC Savana is 13 mpg in the city, 17 mpg on the highway.
The EPA mileage estimate for the 2012 Audi R8 is 11 mpg in the city, 20 mpg on the highway.
The EPA mileage estimate for the 2012 GMC Terrain is 22 mpg in the city, 32 mpg on the highway.
The EPA mileage estimate for the 2012 Volvo XC60 is 19 mpg in the city, 25 mpg on the highway.