Do a search. The TDI vs MB has been discussed here ad-nauseum. IMHO, this is an apples and oranges comparison. However the TDI, correctly maintained has proven itself capable of 250-300,000 miles. It has the expected electronic issues that all modern vehicles have or will have as they age. Also check out www.tdiclub.com RT

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When all else fails, vote from the rooftops!
84' Mercedes Benz 300D Anthracite/black, 171K
03' Volkswagen Jetta TDI blue/black, 93K
93' Chevrolet C2500HD ExCab 6.5TD, Two-tone blue, 252K