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Mercedes-benz S 350 L Grand ED Executive D A Reliability, MOT Pass Rate & Common Faults

Free Mercedes-benz S 350 L Grand ED Executive D A car check

Is the Mercedes-benz S 350 L Grand ED Executive D A reliable? We analysed 1,995 real MOT tests across 443 vehicles to find out.

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Data last updated: · Based on 1,995 real MOT tests
MOT Pass Rate
91.9%
Typical Mileage
47,024mi
Annual Mileage
12,790mi/yr
Est. Lifespan
yrs

The Mercedes-benz S 350 L Grand ED Executive D A is above average for reliability based on real UK MOT data. Here's everything you need to know before buying a used Mercedes-benz S 350 L Grand ED Executive D A.

Mercedes-benz S 350 L Grand ED Executive D A Number Plates

Number plates registered to a Mercedes-benz S 350 L Grand ED Executive D A. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.

Mercedes-benz S 350 L Grand ED Executive D A MOT Pass Rate by Year

How likely is a Mercedes-benz S 350 L Grand ED Executive D A to pass its MOT? Here's the pass rate for each registration year, newest first.

93.8%
2021
91.4%
2020
93.2%
2019

Mercedes-benz S 350 L Grand ED Executive D A Common Faults & Problems

These are the most common serious faults found on Mercedes-benz S 350 L Grand ED Executive D A models during MOT testing — flagged as dangerous or major failures that need immediate attention.

Tyre tread depth below requirements of 1.6mm 28
Tyre has ply or cords exposed 5
Tyre has ply or cords exposed 5
Tyre has ply or cords exposed 4

Mercedes-benz S 350 L Grand ED Executive D A Mileage — What's Normal?

How many miles does a typical Mercedes-benz S 350 L Grand ED Executive D A owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.

Low usage
6,625 mi/yr
Typical
12,790 mi/yr
Average
17,639 mi/yr
Heavy usage
24,885 mi/yr

Mercedes-benz S 350 L Grand ED Executive D A MOT Data by Registration Year

Full breakdown of pass rate and mileage for each year. Use this to compare the Mercedes-benz S 350 L Grand ED Executive D A year you're looking at.

Year Tests Pass Rate Low Mi. Typical Mi. High Mi.
2021 323 93.8% 27,634 42,400 67,422
2020 1,481 91.4% 30,983 48,236 69,847
2019 146 93.2% 27,284 42,554 72,630

How Long Does a Mercedes-benz S 350 L Grand ED Executive D A Last?

Based on 443 Mercedes-benz S 350 L Grand ED Executive D A vehicles on UK roads.

Average
4.7 years
Median
5.0 years

Mercedes-benz S 350 L Grand ED Executive D A Mileage Distribution

Total mileage recorded across all Mercedes-benz S 350 L Grand ED Executive D A MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.

Median
47,024 mi
75th Percentile
70,313 mi
95th Percentile
119,851 mi
Max Recorded
315,174 mi

Best Year to Buy a Used Mercedes-benz S 350 L Grand ED Executive D A

Based on MOT pass rates across all registration years with sufficient test data.

Best year
2021

93.8% MOT pass rate from 323 tests

Year to avoid
2020

91.4% MOT pass rate from 1,481 tests

The best year to buy a used Mercedes-benz S 350 L Grand ED Executive D A is 2021, which has the highest MOT pass rate at 93.8% across 323 tests. The 2020 model year has the lowest pass rate at 91.4% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.

How Does the Mercedes-benz S 350 L Grand ED Executive D A Compare?

MOT pass rates compared to similar models. Click any model for the full breakdown.

Model Pass Rate Tests Typical Mileage Lifespan
Mercedes-benz S 350 L Grand ED Executive D A THIS CAR 91.9% 1,995 47,024 mi — yrs
Mercedes-benz C 77.6% 8,031,355 77,082 mi 32 yrs
Mercedes-benz E 79.4% 4,722,746 83,960 mi 33 yrs
Mercedes-benz A-class 77.6% 4,204,702 57,023 mi 28 yrs
Volkswagen Tiguan R Line TDI Bmt 4MOTN Sa 94.5% 1,482 66,254 mi — yrs

Compared to the Mercedes-benz C (77.6% pass rate) and the Mercedes-benz E (79.4% pass rate), the Mercedes-benz S 350 L Grand ED Executive D A outperforms both on MOT reliability.

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Should you buy a used Mercedes-benz S 350 L Grand ED Executive D A?

The Mercedes-benz S 350 L Grand ED Executive D A has an overall MOT pass rate of 91.9% across 1,995 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.

On the safety side, the most frequently flagged dangerous fault is tyre tread depth below requirements of 1.6mm. Dangerous faults cause an immediate MOT failure and mean the vehicle is not roadworthy until repaired. If you're viewing a Mercedes-benz S 350 L Grand ED Executive D A with an expired or recently passed MOT, ask the seller whether any dangerous faults were found and fixed during the last test.

A typical Mercedes-benz S 350 L Grand ED Executive D A owner drives around 12,790 miles per year. If the car you're looking at is significantly above this, expect more wear on suspension, brakes and tyres. If it's well below, the vehicle may have been sitting unused — check for perished rubber, corroded discs and stale fluids.

Before committing to a purchase, we recommend running a full vehicle history check on the specific car. This will reveal any outstanding finance, stolen markers, write-off history and mileage discrepancies that the seller may not disclose — and that the MOT data alone can't tell you.

Mercedes-benz S 350 L Grand ED Executive D A — Frequently Asked Questions

Is the Mercedes-benz S 350 L Grand ED Executive D A reliable?
Based on 1,995 MOT tests, the Mercedes-benz S 350 L Grand ED Executive D A has a 91.9% pass rate — above the UK average, suggesting good reliability.
What are the common problems on a Mercedes-benz S 350 L Grand ED Executive D A?
The most common failure point is general wear and tear.
How many miles does a Mercedes-benz S 350 L Grand ED Executive D A do per year?
The typical Mercedes-benz S 350 L Grand ED Executive D A does around 12,790 miles per year. Anything significantly above or below this is worth investigating.
How long does a Mercedes-benz S 350 L Grand ED Executive D A last?
Lifespan data is not yet available for this model.
Should I get a vehicle check before buying a Mercedes-benz S 350 L Grand ED Executive D A?
Yes. An MOT pass rate tells you about the model in general, but a vehicle history check reveals the specific car's finance, stolen, write-off and mileage history — things the seller may not disclose.
What is the best year to buy a Mercedes-benz S 350 L Grand ED Executive D A?
Based on MOT pass rates, the best year to buy a used Mercedes-benz S 350 L Grand ED Executive D A is 2021 with a 93.8% pass rate across 323 tests.