Don't forget torque, that's where the most difference is. Once the turbo spools up around 2000 RPM the difference is like night and day. Having said that, I think the power of my 240D, which is comparable to a non-turbo 300D with an automatic, is adequate.

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2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL