Reply to post: Re: Has anyone got any real details?

NOxious Volkswagen diesel emissions scandal: Chief falls on sword

Kevin McMurtrie Silver badge

Re: Has anyone got any real details?

Modern cars tend try to run the engine at heavy acceleration as much as possible for efficiency. The gas pedal modulates the transmission to use the highest gear possible for the desired power. Extra RPM is extra friction and extra exhaust. This has been the only trick left after already optimizing combustion, accessory loads, tires, transmission, aerodynamics, etc. This is also why modern AT cars have such terrible acceleration lag. The engine is already near maximum torque so you must wait for a gear change.

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