Citroen Sm Reliability, MOT Pass Rate & Common Faults
Free Citroen Sm car check
Is the Citroen Sm reliable? We analysed 1,423 real MOT tests across 203 vehicles to find out.
Got a specific Citroen Sm? Enter the reg for a free check:
The Citroen Sm is above average for reliability based on real UK MOT data. Common problems include windscreen washer provides insufficient washer liquid, parking brake: efficiency below requirements and headlamp not working on dipped beam. Here's everything you need to know before buying a used Citroen Sm.
Citroen Sm Number Plates
Number plates registered to a Citroen Sm. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Citroen Sm MOT Pass Rate by Year
How likely is a Citroen Sm to pass its MOT? Here's the pass rate for each registration year, newest first.
Citroen Sm Problems — What Goes Wrong?
The most common reasons a Citroen Sm fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Citroen Sm Mileage — What's Normal?
How many miles does a typical Citroen Sm owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Citroen Sm MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Citroen Sm year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 2016 | 56 | 78.6% | 23,155 | 76,843 | 90,421 |
| 2005 | 82 | 75.6% | 12,768 | 41,262 | 86,013 |
| 1974 | 97 | 81.4% | 39,933 | 58,325 | 92,649 |
| 1973 | 285 | 86.3% | 39,978 | 66,571 | 82,704 |
| 1972 | 239 | 80.3% | 17,654 | 43,589 | 66,982 |
| 1971 | 98 | 78.6% | 16,577 | 56,239 | 73,787 |
How Long Does a Citroen Sm Last?
Based on 203 Citroen Sm vehicles on UK roads.
Citroen Sm Mileage Distribution
Total mileage recorded across all Citroen Sm 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 Citroen Sm
Based on MOT pass rates across all registration years with sufficient test data.
86.3% MOT pass rate from 285 tests
75.6% MOT pass rate from 82 tests
The best year to buy a used Citroen Sm is 1973, which has the highest MOT pass rate at 86.3% across 285 tests. The 2005 model year has the lowest pass rate at 75.6% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Citroen Sm Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Citroen Sm THIS CAR | 82.6% | 1,423 | 54,068 mi | 55 yrs |
| Citroen Xsara | 69.1% | 5,047,330 | 77,497 mi | 28 yrs |
| Citroen Berlingo | 70.1% | 4,453,235 | 83,738 mi | 29 yrs |
| Citroen C3 | 72.7% | 4,435,918 | 53,913 mi | 24 yrs |
| Suzuki Sv 650 X AL8 | 90.1% | 973 | 7,076 mi | — yrs |
Compared to the Citroen Xsara (69.1% pass rate) and the Citroen Berlingo (70.1% pass rate), the Citroen Sm outperforms both on MOT reliability.
Found a Citroen Sm 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 Citroen SmShould you buy a used Citroen Sm?
The Citroen Sm has an overall MOT pass rate of 82.6% across 1,423 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.
The most common problems on the Citroen Sm are windscreen washer provides insufficient washer liquid (40 recorded failures), parking brake: efficiency below requirements (37), and headlamp not working on dipped beam (28). 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 Citroen Sm owner drives around 849 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 Citroen Sm models stay on UK roads for around 55 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.