There is a trade off between using no fuel in gear & losing momentum by pumping a huge compressor thats lurking on the hood (eg an engine) disconnect the compressor (neutral or de-clutch) & you can coast for miles on the kinetic energy using just a tiny amount of fuel.
Getting the trade off correct is the skillful part
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Black Lupo 3L 1.2tdi Manual converted the windsurfing bus!
Kermit the Lupo 3L 1.2 Tdi with a current mpg record of 114mpg (imperial) Now sold
G1 JDM Insight I hate the ride but love the quirkiness
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