Which year Mercedes-Benz Glc 250 D 4m Amg Line Prem A is most reliable?
Based on 1,206 vehicles (2016–2018)
and millions of DVLA MOT records.
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The Glc 250 D 4m Amg Line Prem A is a relatively new model
with only 3 model years in our dataset.
All years are closely matched — differences are real but smaller than you'd see on a model with 10+ years of data.
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Not just "newer is more reliable"
These rankings compare each year at the same mileage point — a 2003 Glc 250 D 4m Amg Line Prem A at 80,000 miles is judged against a 2014 Glc 250 D 4m Amg Line Prem A at 80,000 miles, not its full lifetime average.
Verdicts are also relative to this model's own average, not a universal scale.
That's the difference between "old cars wear out" and "this year is genuinely more or less reliable."
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Best year in dataset
2018
Highest pass rate at 29.1% — the strongest performer across 438 Glc 250 D 4m Amg Line Prem As
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Worth extra checks
2016
Lowest pass rate at 27.0% — years are closely matched but this one trails the rest
These years hit the reliability-to-value sweet spot: a 28.3–28.3% pass rate,
well above this model's median, but old enough to have depreciated significantly from peak price.
If budget matters alongside reliability, start your search here.
Click any year to see full MOT history, common faults and comparisons for those cars.
Verdicts are relative to this model's own average — a good Land Rover year is judged differently from a good Toyota year.
How is this measured?
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What "pass rate" means
The percentage of all MOT tests that resulted in a pass — counted across a car's whole life, not just its first test. Higher means fewer failures over time.
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Mileage groups built from real data
We split this model's real-world mileage history into 5 equal groups — so each slice contains the same number of cars, not an arbitrary round number like "0–30,000 miles."
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Does age still matter?
Yes. A low-mileage 20-year-old car has still had 20 years of weather, perishing rubber, and ageing electrics. Comparing at the same mileage narrows the gap between old and new — but doesn't erase it entirely.
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Why this beats surveys
Our figures come from the DVLA's national MOT database — over 50 million real test results from accredited garages, with no opinions involved. Most reliability guides are based on owner surveys with a few hundred responses per model.
