Mercedes Smart Reliability, MOT Pass Rate & Common Faults
Free Mercedes Smart car check
Is the Mercedes Smart reliable? We analysed 1,296 real MOT tests across 144 vehicles to find out.
Got a specific Mercedes Smart? Enter the reg for a free check:
The Mercedes Smart is about average for reliability based on real UK MOT data. Common problems include tyre tread depth below requirements of 1.6mm, stop lamp not working and exhaust emissions lambda reading after 2nd fast idle outside specified limits. Here's everything you need to know before buying a used Mercedes Smart.
Mercedes Smart Number Plates
Number plates registered to a Mercedes Smart. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Mercedes Smart MOT Pass Rate by Year
How likely is a Mercedes Smart to pass its MOT? Here's the pass rate for each registration year, newest first.
Mercedes Smart Problems — What Goes Wrong?
The most common reasons a Mercedes Smart fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Mercedes Smart Mileage — What's Normal?
How many miles does a typical Mercedes Smart owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Mercedes Smart MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Mercedes Smart year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 2001 | 89 | 67.4% | 61,682 | 73,628 | 107,425 |
| 2000 | 430 | 71.6% | 57,636 | 81,605 | 112,755 |
| 1999 | 555 | 69.5% | 51,756 | 78,765 | 104,602 |
How Long Does a Mercedes Smart Last?
Based on 144 Mercedes Smart vehicles on UK roads.
Mercedes Smart Mileage Distribution
Total mileage recorded across all Mercedes Smart MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.
Best Year to Buy a Used Mercedes Smart
Based on MOT pass rates across all registration years with sufficient test data.
71.6% MOT pass rate from 430 tests
67.4% MOT pass rate from 89 tests
The best year to buy a used Mercedes Smart is 2000, which has the highest MOT pass rate at 71.6% across 430 tests. The 2001 model year has the lowest pass rate at 67.4% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Mercedes Smart Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Mercedes Smart THIS CAR | 71.0% | 1,296 | 74,278 mi | 27 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 |
| Honda XL 1000V Varadero | 86.3% | 787 | 27,867 mi | 27 yrs |
Compared to the Mercedes Motorhome (76.7% pass rate) and the Mercedes Unknown (79.2% pass rate), the Mercedes Smart trails behind on MOT reliability.
Found a Mercedes Smart 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 SmartShould you buy a used Mercedes Smart?
The Mercedes Smart has an overall MOT pass rate of 71.0% across 1,296 real MOT tests — roughly in line with the UK average.
The most common problems on the Mercedes Smart are tyre tread depth below requirements of 1.6mm (89 recorded failures), stop lamp not working (49), and exhaust emissions lambda reading after 2nd fast idle outside specified limits (39). These are the faults most likely to cause an MOT failure on this model, so check for them carefully on any test drive or pre-purchase inspection. Many are wear-and-tear items that can be budgeted for, but a car that's already failing on multiple fronts may signal neglected maintenance.
A typical Mercedes Smart owner drives around 4,017 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.
In terms of longevity, most Mercedes Smart models stay on UK roads for around 27 years — a strong showing that suggests solid build quality and readily available parts. If you're buying one that's already approaching that window, the data suggests it has plenty of life left provided it's been maintained.
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.