Quote:
Originally Posted by Quacker
Your source is dead wrong as proven by the basic fact that automatic cars do not have dual mass flywheels and fuel is shut off completely on over-run, but continues to be supplied when an engine idles, decoupled from the transmission.
If yours is a manual car, the same applies but it will have a dual mass flywheel which is there specifically to prevent shock damage to the transmission, not the other way about. Judder is caused by the engine being stressed and unbalanced under load at below its working range, which is why so many cars now have an idiot-guide to warn drivers to change down under 1500rpm in any gear while under even a slight load.
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Why do Volvo add the coasting feature to eco mode if it makes it less eco then quacker? Maybe you should contact them and let them know you can improve their cars?