Mercedes Benz S500 L Amg Ln Prm+exc Mhev4m A (2021)
2021 Mercedes Benz S500 L Amg Ln Prm+exc Mhev4m A
CarHunch analysed 208 real MOT records for the 2021 Mercedes Benz S500 L Amg Ln Prm+exc Mhev4m A. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
This S500 is a significant reliability concern: just 40% pass their MOT first time, half the UK average of 80%, and 7.7% have suffered dangerous defects. The hybrid powertrain hasn't solved the problem—the pass rate sits at 39.7% across the 207 hybrids in this dataset.
Despite relatively modest mileage for a three-year-old luxury car (median 31,700 miles), these vehicles are racking up failures and advisories at a troubling rate. Before committing to one, insist on a full pre-purchase inspection by a Mercedes specialist, as the first-time pass rate suggests systemic issues that routine ownership won't address.
What to check before buying a 2021 Mercedes Benz S500 L Amg Ln Prm+exc Mhev4m 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 S500 L Amg Ln Prm+exc Mhev4m A
MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Hybrid Electric (Clean) (100%) | 207 | 39.7% | 0.12 |
| Petrol (0%) | 1 | 100% | 0 |
Mileage Distribution
Most 2021 Mercedes Benz S500 L Amg Ln Prm+exc Mhev4m 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 2021 Mercedes Benz S500 L Amg Ln Prm+exc Mhev4m A vehicles fall between 19,799 and 40,869 miles.
MOT History Averages
Found a specific Mercedes Benz S500 L Amg Ln Prm+exc Mhev4m A?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.