The way a driver operates a car can produce very different fuel-economy numbers, and when driving downhill, two notable techniques come into play. The first is leaving the car in gear and using so-called engine braking to provide at least some deceleration. But many believe putting a car in neutral uses less fuel, followed by use of the brakes to slow as
brakes - Should I depress the clutch pedal when braking to a stop
Saving gas by lifting the pedal: engine braking vs coasting (video)
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What is a 'coasting' function? PH Explains - PistonHeads UK
Lift and Coast technique
What Is Regenerative Braking, and How Does It Work?
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Is frequent use of the engine brake (lower gear to slow down
Under pressure - Porsche Newsroom
Videos - Green Car Photos, News, Reviews, and Insights - Green Car Reports
