A tally should find Toyota Camry's, then Honda Accords, Chevy's, ... since those were the big sellers for decades. Not near as many W123's sold in the U.S. But an old mechanical diesel should be the least likely to die on the road, since electrical problems are the first "dies while driving" culprit, especially in complicated modern cars. In 1979 I stopped to help a guy in a new Chevy truck. No spark, looked it over and quickly found a terminal nut on the coil loose. Tightened and it fired right up. Lazy union workers?

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1984 & 1985 CA 300D's
1964 & 65 Mopar's - Valiant, Dart, Newport
1996 & 2002 Chrysler minivans