My 2016 Charger V-6 spins 1,600 rpm at 80mph... it likes to run right at 77 mph where I can get 36 MPG. Any faster or slower it decreases- at 60 mph it gets 30MPG (frequently shifting between 7th & 8th gear) at 80 mph it gets 28-29 MPG.All true. My friend has a KIA Forte. At 75 miles per hour the little 2 liter is only revving 2100 rpm. Amazing At 75 older 60s and 70s engines were being stressed. We have as much HP in a 2.5 liter engine now as we did during the early pollution control years. Moving only half the weight makes a big difference.

