Mercedes-Benz E320 MOT reliability

Mercedes-Benz E320s passed their MOT first time 85% of the time across 13 tests in 2025.

These figures come from only 13 MOT tests. With so few cars, a single pass or fail changes the percentages a lot, so treat them as a rough guide rather than a true average.

First-time pass rate

85%

MOTs analysed

13

Still licensed (GB)

–

Body type

–

Pass rate by year of first registration

Older cars fail more often, so compare a car with others of the same age. Years with very few MOTs can show extreme pass rates, even 0% or 100%, so give more weight to years with more tests.

In detail:

First registered

2004 diesel

4 MOTs

Passed first time 75%. Typical mileage 151,534 (most between 102,447 and 201,596).

2017: 0% → 2018: 100% → 2019: 100% → 2020: 67% → 2022: 100% → 2023: 75% → 2024: 100% → 2025: 75%

Most common failures

Registration plate lamp(s): inoperative in the case of a single lamp or all lamps (25.0%)

2004 petrol

2 MOTs

Passed first time 50%. Typical mileage 84,592 (most between 82,400 and 86,784).

2008: 0% → 2017: 0% → 2018: 100% → 2019: 100% → 2021: 100% → 2022: 100% → 2023: 0% → 2024: 50% → 2025: 50%

Most common failures

Fuel cap/sealing device: ineffective (50.0%)

Where 2004 E320s fail

Lights & electrics

25.0%

Looking at a particular car?

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Based on 2025 initial MOT tests in DVSA's anonymised MOT dataset (cars and light vans). Contains public sector information licensed under the Open Government Licence v3.0. Model details: Vehicle data by VehiclesDB.