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Mercedes-benz G 400 AMG Line Prem D 4MATIC A Reliability, MOT Pass Rate & Common Faults

Free Mercedes-benz G 400 AMG Line Prem D 4MATIC A car check

Is the Mercedes-benz G 400 AMG Line Prem D 4MATIC A reliable? We analysed 318 real MOT tests across 135 vehicles to find out.

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Data last updated: · Based on 318 real MOT tests
MOT Pass Rate
92.1%
Typical Mileage
33,942mi
Annual Mileage
6,910mi/yr
Est. Lifespan
yrs

The Mercedes-benz G 400 AMG Line Prem D 4MATIC 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 G 400 AMG Line Prem D 4MATIC A.

Mercedes-benz G 400 AMG Line Prem D 4MATIC A Number Plates

Number plates registered to a Mercedes-benz G 400 AMG Line Prem D 4MATIC A. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.

Mercedes-benz G 400 AMG Line Prem D 4MATIC A MOT Pass Rate by Year

How likely is a Mercedes-benz G 400 AMG Line Prem D 4MATIC A to pass its MOT? Here's the pass rate for each registration year, newest first.

92%
2021

Mercedes-benz G 400 AMG Line Prem D 4MATIC A Common Faults & Problems

These are the most common serious faults found on Mercedes-benz G 400 AMG Line Prem D 4MATIC A models during MOT testing — flagged as dangerous or major failures that need immediate attention.

Tyre tread depth below requirements of 1.6mm 6
Brake pad(s) less than 1.5 mm thick 2
Brake pad(s) less than 1.5 mm thick 1
Tyre has ply or cords exposed Cut in tread 1

Mercedes-benz G 400 AMG Line Prem D 4MATIC A Mileage — What's Normal?

How many miles does a typical Mercedes-benz G 400 AMG Line Prem D 4MATIC A owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.

Low usage
4,570 mi/yr
Typical
6,910 mi/yr
Average
7,897 mi/yr
Heavy usage
9,990 mi/yr

Mercedes-benz G 400 AMG Line Prem D 4MATIC A MOT Data by Registration Year

Full breakdown of pass rate and mileage for each year. Use this to compare the Mercedes-benz G 400 AMG Line Prem D 4MATIC A year you're looking at.

Year Tests Pass Rate Low Mi. Typical Mi. High Mi.
2021 274 92.0% 25,672 34,078 42,132

How Long Does a Mercedes-benz G 400 AMG Line Prem D 4MATIC A Last?

Based on 135 Mercedes-benz G 400 AMG Line Prem D 4MATIC A vehicles on UK roads.

Average
3.7 years
Median
4.0 years

Mercedes-benz G 400 AMG Line Prem D 4MATIC A Mileage Distribution

Total mileage recorded across all Mercedes-benz G 400 AMG Line Prem D 4MATIC A MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.

Median
33,942 mi
75th Percentile
42,242 mi
95th Percentile
60,216 mi
Max Recorded
116,454 mi

Best Year to Buy a Used Mercedes-benz G 400 AMG Line Prem D 4MATIC A

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

Best year
2021

92.0% MOT pass rate from 274 tests

The best year to buy a used Mercedes-benz G 400 AMG Line Prem D 4MATIC A is 2021, which has the highest MOT pass rate at 92.0% across 274 tests.

How Does the Mercedes-benz G 400 AMG Line Prem D 4MATIC 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 G 400 AMG Line Prem D 4MATIC A THIS CAR 92.1% 318 33,942 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
BMW X3 D Sport 76.8% 573 146,045 mi — yrs

Compared to the Mercedes-benz C (77.6% pass rate) and the Mercedes-benz E (79.4% pass rate), the Mercedes-benz G 400 AMG Line Prem D 4MATIC A outperforms both on MOT reliability.

Found a Mercedes-benz G 400 AMG Line Prem D 4MATIC A you like?

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Should you buy a used Mercedes-benz G 400 AMG Line Prem D 4MATIC A?

The Mercedes-benz G 400 AMG Line Prem D 4MATIC A has an overall MOT pass rate of 92.1% across 318 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 G 400 AMG Line Prem D 4MATIC 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 G 400 AMG Line Prem D 4MATIC A owner drives around 6,910 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 G 400 AMG Line Prem D 4MATIC A — Frequently Asked Questions

Is the Mercedes-benz G 400 AMG Line Prem D 4MATIC A reliable?
Based on 318 MOT tests, the Mercedes-benz G 400 AMG Line Prem D 4MATIC A has a 92.1% pass rate — above the UK average, suggesting good reliability.
What are the common problems on a Mercedes-benz G 400 AMG Line Prem D 4MATIC A?
The most common failure point is general wear and tear.
How many miles does a Mercedes-benz G 400 AMG Line Prem D 4MATIC A do per year?
The typical Mercedes-benz G 400 AMG Line Prem D 4MATIC A does around 6,910 miles per year. Anything significantly above or below this is worth investigating.
How long does a Mercedes-benz G 400 AMG Line Prem D 4MATIC A last?
Lifespan data is not yet available for this model.
Should I get a vehicle check before buying a Mercedes-benz G 400 AMG Line Prem D 4MATIC 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 G 400 AMG Line Prem D 4MATIC A?
Based on MOT pass rates, the best year to buy a used Mercedes-benz G 400 AMG Line Prem D 4MATIC A is 2021 with a 92.0% pass rate across 274 tests.