Se, sxt trims have a 3.6L v6 pentastar engine. The r/t model is a 5.7L v8 and the srt models vary between a 6.1L or a 6.4L depending on the year. The se/sxt models have the best fuel economy due to them having the smaller v6 engine.
Fuel Economy: City 19/Hwy 30/Comb 23 MPG. City 19/Hwy 30/Comb 23 MPG. City 16/Hwy 25/Comb 19 MPG. 2015 Dodge Challenger SXT Plus Coupe 2D; 2015 Dodge Challenger R/T Coupe 2D;
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