Mercedes S 350 L AMG Line Premium + D A
Reliability, estimated running costs, and MOT data across 2 model years from 303 MOT tests in 2024.
Avg Pass Rate
98%
Total Tests
303
Highest Pass Rate
2021 (99%)
Years Covered
2
About the Mercedes S 350 L AMG Line Premium + D A
The Mercedes S 350 L AMG Line Premium + D A was MOT tested 303 times in 2024 (DVSA data, retests included) across 2 model years (2021), with an average pass rate of 98%. That's comfortably above the average of 82% across all models in our data. Our records list diesel versions.
Best and Worst Years
Of the years with at least 100 tests, the 2021 model has the highest pass rate at 99% from 142 tests. The 2021 model has the lowest at 96%. With just a 3 point gap, pass rates are similar across these years. Newer cars usually pass more often simply because they are younger.
Mileage Across Years
The oldest model in our data (2021) averages 35,442 miles, while the newest (2021) averages 41,384 miles.
Compared to the Mercedes brand average of 87%, the S 350 L AMG Line Premium + D A performs 11 points better, making it one of the more reliable options in the Mercedes range.
Estimated Running Costs
Based on 7,400 miles/year, average pump prices of 174.57p petrol and 199.33p diesel (GOV.UK weekly road fuel prices, week of 19 October 2026), and MOT pass rate data. Insurance not included.
Full 2021 detailsHow reliable is the Mercedes S 350 L AMG Line Premium + D A?
Mercedes S 350 L AMG Line Premium + D A by Year
Click any year to see detailed running costs, reliability data, and comparisons with similar cars.
Questions about the Mercedes S 350 L AMG Line Premium + D A
Is the Mercedes S 350 L AMG Line Premium + D A reliable?
Across its 2 model years in our data (2021), the Mercedes S 350 L AMG Line Premium + D A averages a 98% MOT pass rate, from 303 tests (DVSA MOT data for tests in 2024, retests included). That's 16 points above the average of 82% across all models in the same data. The 2021 model has the highest pass rate of the years with at least 100 tests, at 99%.
Which year Mercedes S 350 L AMG Line Premium + D A has the best MOT pass rate?
Of the years with at least 100 tests, the 2021 Mercedes S 350 L AMG Line Premium + D A has the highest MOT pass rate at 99%, while the 2021 model has the lowest at 96%, a 3 point gap. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.
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