Mercedes Benz G 400 Amg Line Prem + D 4m A (2022)
2022 Mercedes Benz G 400 Amg Line Prem + D 4m A
CarHunch analysed 254 real MOT records for the 2022 Mercedes Benz G 400 Amg Line Prem + D 4m A. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
This G 400 has a first-time MOT pass rate of just 57.1%, well below the UK average of 80%, which is a genuine red flag for a premium diesel SUV. The dangerous defect rate sits at a modest 1.2%, so catastrophic failures are rare, but the gap between this car and typical vehicles suggests underlying issues worth investigating before purchase.
At 25,197 median miles for a 2022 model, these cars are running relatively low mileage, yet they're still failing MOTs at nearly double the national rate—pointing to build or design gremlins rather than wear-and-tear problems. With an average of 0.07 failures per vehicle, the issues are real but scattered across the fleet; get a pre-purchase inspection focused on diesel emissions systems and suspension components, as these are common weak points on the G-Class platform.
What to check before buying a 2022 Mercedes Benz G 400 Amg Line Prem + D 4m A
Practical pre-purchase checks for this age and model.
- 📋 Check the full MOT history. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. Enter the reg below for a full AI analysis.
- 🔍 Inspect for corrosion in person. Brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that's expensive to fix and can fail an MOT.
- 🛞 Check tyres and brakes. The most common advisory items at this age. Budget for replacement if they're near the limit — factor this into your offer price.
- 📄 Run an HPI check. The MOT history won't show outstanding finance, insurance write-offs, or stolen status — an HPI check will.
Before you buy a Mercedes Benz G 400 Amg Line Prem + D 4m A
MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.
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Mileage Distribution
Most 2022 Mercedes Benz G 400 Amg Line Prem + D 4m A vehicles sit in the blue band. If the car you're looking at is outside it, it's either unusually low or high mileage for its age.
Half of all 2022 Mercedes Benz G 400 Amg Line Prem + D 4m A vehicles fall between 16,682 and 31,313 miles.
MOT History Averages
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