Steve Sutcliffe has the keys to two very fast versions of the BMW 3-series: The 435bhp petrol BMW M3 and the 345bhp diesel Alpina D3. Should you satisfy your high-performance saloon cravings with a petrol or a diesel engine? Let’s find out. Autocar, the world’s leading motoring magazine and website, delivers industry-leading news, the most in-depth car reviews and opinion from our team of experts. Our presenters include some of the world’s top motoring journalists who have unrivalled access to the world’s fastest, rarest, most exotic and most exciting cars on some of the world’s best roads and race tracks.
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