CarCostCheck

Mercedes S 350 l grand ed executive d a

Reliability, running costs, and MOT data across 3 years from 1,524 real MOT tests.

Avg Pass Rate

94%

Total Tests

1,524

Best Year

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 has been tested 1,524 times in 2026 MOT data across 3 model years (2019 to 2021), with an average pass rate of 94%. That's comfortably above the national average of 82%, making it a reliable choice. Available as diesel.

Best and Worst Years

The 2021 model is the most reliable with a 95% pass rate from 296 tests. The 2020 model has the lowest at 93%. With just a 2 point spread, the S 350 l grand ed executive d a is consistently reliable regardless of year.

Reliability Trend

The MERCEDES S 350 L GRAND ED EXECUTIVE D A has maintained consistent MOT pass rates across model years, varying by only 1 percentage points.

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

Fuel (Diesel, 2925cc)
£1,245
Road Tax
£195
MOT Test
£55
Predicted Repairs
£200
Total per year£1,695
Per month£141/mo

Based on 7,400 miles/year, current fuel prices, and MOT pass rate data. Insurance not included.

Full 2021 details

How reliable is the Mercedes S 350 l grand ed executive d a?

vs national average+12% (82% avg)
vs Mercedes brand average+7% (87% avg)
Best to worst year spread2 percentage points
Reliability trendStable over years

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.

YearPass RateTestsAvg Mileage
202195%29639,306 mi
202093%1,16853,736 mi
201995%6056,993 mi

Mercedes S 350 l grand ed executive d a Guides & Articles

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