Aklim you're right on the mileage, they're almost identical between the 2 cars. I've been considering a CDI off and on in the past year or so, not because of the mileage but the torque, refinement, newer chassis and so on. But I don't feel like getting rid of my TDI which is even more fuel-efficient and having both a CDI and a TDI is pricey.

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2004 VW Jetta TDI (manual)

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