If I could buy a diesel version of the Smart here in the US I'd do it in a heartbeat. I'm not too impressed with the gas version though. My Jetta which unlike the Smart is a 4-door sedan gets about the same mileage. But do expect even the gas version to be hugely popular. It seems there's already a big waiting list.

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2004 VW Jetta TDI (manual)

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