No need to 'simmer' a modern turbo after a long run?

I am the driver of a new Audi A6 diesel, which has stop-start. I was concerned about an abrupt engine stop after a long or hard drive, and emailed Audi to ask them about it. In their reply they say: "modern engines now have more efficient cooling systems that are monitored via sensors and the engine ECU. This negates the need to simmer after a journey and why the start/stop system
operates with no adverse affect on either the engine or turbo."
Do you agree with their assessment?

Asked on 14 May 2013 by MrsFlap

Answered by Honest John

Temp sensors prevent the stop/start system from stopping the engine if the turbo is too hot. But keep their reply, because if your turbo does ever fail due to a coked up bearing within the first 6 years you can wave their reply under their noses and demand they replace the turbo FoC.

Tags: technical issues new cars owning turbo engines

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