Mercedes S 350 L Grand Ed Executive D A
Reliability, estimated running costs, and MOT data across 3 model years from 1,524 MOT tests in 2024.
Avg Pass Rate
94%
Total Tests
1,524
Highest Pass Rate
2021 (95%)
Years Covered
3
About the Mercedes S 350 L Grand Ed Executive D A
The Mercedes S 350 L Grand Ed Executive D A was MOT tested 1,524 times in 2024 (DVSA data, retests included) across 3 model years (2019 to 2021), with an average pass rate of 94%. 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 95% from 296 tests. The 2020 model has the lowest at 93%. With just a 2 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 (2019) averages 56,993 miles, while the newest (2021) averages 39,306 miles.
Compared to the Mercedes brand average of 87%, the S 350 L Grand Ed Executive D A performs 7 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 Grand Ed Executive D A?
Mercedes S 350 L Grand Ed Executive 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 Grand Ed Executive D A
Is the Mercedes S 350 L Grand Ed Executive D A reliable?
Across its 3 model years in our data (2019 to 2021), the Mercedes S 350 L Grand Ed Executive D A averages a 94% MOT pass rate, from 1,524 tests (DVSA MOT data for tests in 2024, retests included). That's 12 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 95%.
Which year Mercedes S 350 L Grand Ed Executive D A has the best MOT pass rate?
Of the years with at least 100 tests, the 2021 Mercedes S 350 L Grand Ed Executive D A has the highest MOT pass rate at 95%, while the 2020 model has the lowest at 93%, a 2 point gap. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.
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