Mercedes S320 CDI Auto Reliability, MOT Pass Rate & Common Faults
Free Mercedes S320 CDI Auto car check
Is the Mercedes S320 CDI Auto reliable? We analysed 1,935 real MOT tests across 440 vehicles to find out.
Got a specific Mercedes S320 CDI Auto? Enter the reg for a free check:
The Mercedes S320 CDI Auto is about average for reliability based on real UK MOT data. Here's everything you need to know before buying a used Mercedes S320 CDI Auto.
Mercedes S320 CDI Auto Number Plates
Number plates registered to a Mercedes S320 CDI Auto. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Mercedes S320 CDI Auto Problems — What Goes Wrong?
The most common reasons a Mercedes S320 CDI Auto fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Mercedes S320 CDI Auto Common Faults & Problems
These are the most common serious faults found on Mercedes S320 CDI Auto models during MOT testing — flagged as dangerous or major failures that need immediate attention.
Mercedes S320 CDI Auto Mileage — What's Normal?
How many miles does a typical Mercedes S320 CDI Auto owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Mercedes S320 CDI Auto Mileage Distribution
Total mileage recorded across all Mercedes S320 CDI Auto MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.
How Does the Mercedes S320 CDI Auto Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Mercedes S320 CDI Auto THIS CAR | 73.9% | 1,935 | 122,201 mi | — yrs |
| Mercedes Motorhome | 76.7% | 14,848 | 66,873 mi | 45 yrs |
| Mercedes Unknown | 79.2% | 11,881 | 102,484 mi | 39 yrs |
| Mercedes Camper | 74.6% | 8,342 | 82,260 mi | 47 yrs |
| Kawasaki Z200 | 82.8% | 1,481 | 19,286 mi | 49 yrs |
Compared to the Mercedes Motorhome (76.7% pass rate) and the Mercedes Unknown (79.2% pass rate), the Mercedes S320 CDI Auto trails behind on MOT reliability.
Found a Mercedes S320 CDI Auto you like?
Run a full vehicle history check on the specific car. See finance, stolen, write-off, mileage and MOT data for that exact vehicle.
Check a specific Mercedes S320 CDI AutoShould you buy a used Mercedes S320 CDI Auto?
The Mercedes S320 CDI Auto has an overall MOT pass rate of 73.9% across 1,935 real MOT tests — roughly in line with the UK average.
The most common failure point is registration plate character(s) incorrectly spaced with 2 recorded occurrences. Check for this on any test drive or pre-purchase inspection.
On the safety side, the most frequently flagged dangerous fault is tyre has ply or cords exposed. Dangerous faults cause an immediate MOT failure and mean the vehicle is not roadworthy until repaired. If you're viewing a Mercedes S320 CDI Auto 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 S320 CDI Auto owner drives around 4,919 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.