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What is/are the most reliable 3 litre engined cars, petrol or diesel?

What is/are the most reliable 3 litre engined cars, petrol or diesel?

Asked on 26 January 2014 by DStig1

Answered by Honest John
The Ford 3.0 quad cam V6 petrol fitted to Fords, Jaguars and Nobels; the Mercedes 3.0 V6 diesel; BMW's 3.0 straight six diesel.

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