What year Mercedes 300 E Auto is most reliable?

Based on MOT first-test pass rates, the 1988 Mercedes 300 E Auto has the highest pass rate at 0.1%, out of 786 vehicles tested.

What are the most common Mercedes 300 E Auto MOT failures?

The most common Mercedes 300 E Auto MOT failures vary by year. Check the individual year pages for detailed defect breakdowns — links in the table above.

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Mercedes 300 E Auto — Reliability by Year

2,882 vehicles · MOT data 1986–1989 · first-test pass rates

Best pass rate year

1988

0.1% first-test pass rate · 786 vehicles

Lowest pass rate year

1987

0.0% first-test pass rate · 795 vehicles

Year	Pass rate	Avg mileage	Vehicles
1989	0.0%	—	579
1988	0.1%	105,239 mi	786
1987	0.0%	—	795
1986	0.1%	113,352 mi	722

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