Norton 650SS Reliability, MOT Pass Rate & Common Faults
Free Norton 650SS car check
Is the Norton 650SS reliable? We analysed 973 real MOT tests across 155 vehicles to find out.
Got a specific Norton 650SS? Enter the reg for a free check:
The Norton 650SS is above average for reliability based on real UK MOT data. Common problems include wheel alignment incorrect which adversely affects the steering, position lamp does not illuminate immediately when switched on and footrest missing. Here's everything you need to know before buying a used Norton 650SS.
Norton 650SS Number Plates
Number plates registered to a Norton 650SS. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Norton 650SS MOT Pass Rate by Year
How likely is a Norton 650SS to pass its MOT? Here's the pass rate for each registration year, newest first.
Norton 650SS Problems — What Goes Wrong?
The most common reasons a Norton 650SS fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Norton 650SS Mileage — What's Normal?
How many miles does a typical Norton 650SS owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Norton 650SS MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Norton 650SS year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 1969 | 50 | 100.0% | 2,894 | 22,772 | 45,850 |
| 1968 | 84 | 90.5% | 3,351 | 10,256 | 27,293 |
| 1966 | 58 | 93.1% | 768 | 4,248 | 21,092 |
| 1965 | 92 | 96.7% | 1,977 | 11,275 | 17,734 |
| 1964 | 83 | 92.8% | 1,366 | 4,284 | 22,623 |
| 1963 | 114 | 95.6% | 6,186 | 25,038 | 40,281 |
| 1962 | 231 | 93.1% | 1,655 | 6,034 | 19,198 |
How Long Does a Norton 650SS Last?
Based on 155 Norton 650SS vehicles on UK roads.
Norton 650SS Mileage Distribution
Total mileage recorded across all Norton 650SS 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 Norton 650SS
Based on MOT pass rates across all registration years with sufficient test data.
100.0% MOT pass rate from 50 tests
90.5% MOT pass rate from 84 tests
The best year to buy a used Norton 650SS is 1969, which has the highest MOT pass rate at 100.0% across 50 tests. The 1968 model year has the lowest pass rate at 90.5% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Norton 650SS Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Norton 650SS THIS CAR | 93.8% | 973 | 8,032 mi | 64 yrs |
| Norton Commando | 91.4% | 13,398 | 18,484 mi | 58 yrs |
| Norton Dominator | 93.2% | 4,068 | 8,674 mi | 72 yrs |
| Norton Commander | 92.3% | 2,220 | 26,431 mi | 55 yrs |
| Sym Symnh T 125 | 76.3% | 417 | 6,114 mi | — yrs |
Compared to the Norton Commando (91.4% pass rate) and the Norton Dominator (93.2% pass rate), the Norton 650SS outperforms both on MOT reliability.
Found a Norton 650SS 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 Norton 650SSShould you buy a used Norton 650SS?
The Norton 650SS has an overall MOT pass rate of 93.8% across 973 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 Norton 650SS are wheel alignment incorrect which adversely affects the steering (2 recorded failures), position lamp does not illuminate immediately when switched on (2), and footrest missing (2). 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 Norton 650SS owner drives around 242 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 Norton 650SS models stay on UK roads for around 64 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.