MerCruiser

Fuel Economy

Engine HP Idle 1000 1500 2000 2500 3000 3500 4000 4500 4800 WOT
MerCruiser 3.0 MPI/TKS – 181 cid 135 hp 0.5 1 1.5 2.9 3.8 4.8 6.2 7.4 9.3 10.5 10.5 GPH
MerCruiser 4.3 TKS – 262 cid 190 hp 0.6 1.1 2.5 3.9 5 6.1 7.5 10.5 14.5 16 16.0 GPH
MerCruiser 4.3 MPI – 262 cid 220 hp 0.6 1.2 2.5 4 4.5 6 8.5 12 16 18 18.0 GPH
MerCruiser 4.5 MPI – V6 250 hp 0.7 1.3 2.2 4 5.9 6.6 8.1 10.1 14.6 19.7 19.7 GPH
MerCruiser 5.0 TKS – 305 cid 220 hp 0.8 1.5 2.8 4.9 6.6 8.1 9.4 11.5 16.3 18.2 18.2 GPH
MerCruiser 5.0 MPI – 305 cid 260 hp 0.9 1.4 2.5 4.5 6 7.9 10 12.5 16 18.5 18.5 GPH
MerCruiser 5.7 L – 350 cid 260 hp 1 1.4 2.5 4.5 6.6 8.7 9.8 12.5 17.2 21 21.0 GPH
MerCruiser 5.7 MAG – 350 cid 300 hp 1 1.5 2.5 4.5 6 7.5 10 12.5 16.5 23 23.0 GPH
MerCruiser 6.2 MAG – 377 cid 320 hp 1.1 2 3 4.5 7 9 11.5 14 18 24.5 24.5 GPH
MerCruiser 7.4 MPI – 454 cid 310 hp 1.3 2.5 3.5 6.1 9.9 12.5 17.4 22 28.5 28.5 GPH
MerCruiser 8.1 MAG – 496 cid 375 hp 1.2 2.3 3.5 5.5 8 11.5 15 20.5 27.5 30.5 30.5 GPH
MerCruiser 8.1 HO – 496 cid 425 hp 1.2 2.6 4.5 6 8 11.5 16 21.5 28.5 33.5 33.5 GPH
MerCruiser 8.2 MAG – 502 cid 380 hp 1.2 2.3 4 7 8.5 11 14.5 19.5 27 31 31.0 GPH
MerCruiser 8.2 HO – 502 cid 430 hp 1.2 2.5 4 7.5 9.5 12.5 17 21.5 29 37.5 37.5 GPH

*These figures don’t take drag of the boat, sea conditions, propeller pitch/size, or efficiency losses through transmissions and bearings into account.

WOT = Wide Open Throttle

December 2, 2018