Quick Answer: What Is The Best Speed For Fuel Economy?

Is Cruise Control better or worse for gas mileage?

Generally speaking at highway speeds, on relatively flat roads with little change in traffic speed, cruise control will result in better fuel mileage..

How many miles per gallon is good fuel economy?

Best and Worst Gas Mileage 2016Best Gas Mileage for Cars, Trucks and SUVsMidsize SedansRange*: 16-35 combined mpgAverage**: 26 mpg combinedBest:Honda Civic35Best:Toyota Corolla Eco35Worst:Dodge Challenger SRT81652 more rows•Feb 8, 2016

Is a higher or lower fuel economy better?

Fuel economy is the relationship between the distance traveled and fuel consumed. … The window sticker on new US cars displays the vehicle’s fuel consumption in US gallons per 100 miles, in addition to the traditional MPG number. A lower number means more efficient, while a higher number means less efficient.

At what speed is a car most efficient?

Reality: Fuel efficiency doesn’t really start to drop until you reach speeds higher than 60. And how smoothly you drive makes much more of a difference on gas mileage than how fast. According to the U.S. Department of Energy (DOE), most cars’ fuel efficiency peaks at speeds from 35 to 60 miles per hour.

Is it better to accelerate fast or slow?

Cars get poorer fuel economy in lower gears, and accelerating too slowly prevents upshifting at an efficient rate. … But in our testing we found that taking 15 seconds to accelerate to 50 mph used less fuel than taking 30 seconds to reach the same speed, because the car entered its top, fuel-saving gear sooner.

At what RPM is an engine most efficient?

about 1000 rpmIt is likely to be geared for 2500 rpm or so at that speed, yet for maximum efficiency the engine should be running at about 1000 rpm to generate that power as efficiently as possible for that engine (although the actual figures will vary by engine and vehicle).