With the GM 2.8 L diesel
gaining only 2 MPG
over the 2.5 L
gasoline engine, while adding 440 pounds to its curb weight, the diesel fuel economy
gains are not sufficient to offset the higher emission factor for diesel fuel, with the diesel option producing 4 % more CO2 - equivalent emissions
over the truck's life - cycle.
The Kia Trail «ster is powered by an electric motor combined with a 1.6 - liter turbocharged
gasoline engine, delivering a 25 to 30 percent increase in fuel economy in city driving and a 5 to 10 percent
gain in highway driving
over an ordinary Kia Soul.