Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Accord Hybrid gets 47mpg and Civic Hybrid gets 45mpg?

Carbon · 05-05-2015, 03:37 PM

The Accord's engine is more advanced. It has 13:1 compression vs 10.8:1. 16 valves vs. 8 valves. It's CARB rating is LEV3-SULEV30 vs ULEV2/AT-PZEV.

The electric motor in the Accord is rated at 166HP vs 23HP in the Civic. They don't list the battery size, but you can bet it's bigger in the Accord. That is a huge amount of additional work the electric motor can do that the gas engine doesn't have to.

The Civic torque rating is listed as 127 @ 1000-3500. The Accord on the other hand is listed as 122 @ 3500-6000 (thank you DOHC). The Civic is designed to rely more heavily on the gas engine than the Accord.

Final drive ratio is 3.42 in the Accord vs 3.94 in the Civic. That right there is highway mileage.

The two cars are just not designed with the same balance in mind. Perhaps the next refresh of the Civic will reflect increases commensurate with the 2015 accord.

05-05-2015, 03:37 PM	#2 (permalink)
Carbon EcoModding Lurker Join Date: Jul 2014 Location: Eagan, Minnesota Posts: 26 Optima Hybrid - '13 Kia Optima LX Hybrid 90 day: 33.02 mpg (US) Outlander - '15 Mitsubishi Outlander SE AWD 90 day: 25.17 mpg (US) Thanks: 8 Thanked 26 Times in 10 Posts	The Accord's engine is more advanced. It has 13:1 compression vs 10.8:1. 16 valves vs. 8 valves. It's CARB rating is LEV3-SULEV30 vs ULEV2/AT-PZEV. The electric motor in the Accord is rated at 166HP vs 23HP in the Civic. They don't list the battery size, but you can bet it's bigger in the Accord. That is a huge amount of additional work the electric motor can do that the gas engine doesn't have to. The Civic torque rating is listed as 127 @ 1000-3500. The Accord on the other hand is listed as 122 @ 3500-6000 (thank you DOHC). The Civic is designed to rely more heavily on the gas engine than the Accord. Final drive ratio is 3.42 in the Accord vs 3.94 in the Civic. That right there is highway mileage. The two cars are just not designed with the same balance in mind. Perhaps the next refresh of the Civic will reflect increases commensurate with the 2015 accord. __________________ Last edited by Carbon; 05-05-2015 at 03:47 PM..