This is the case with a lot of new cars. The Jaguar F-Type, for instance, is a particularly bad example.

Engineers tune the exhaust to pop and crackle as the revs drop. Highly strung and very rich-running race cars do this. It makes those cars sound cool.

This street car 911 is not such a race car. It has been tuned to sound like this. It only sounds like the engine is eating itself.

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