Sunbeam S8 Reliability, MOT Pass Rate & Common Faults
Free Sunbeam S8 car check
Is the Sunbeam S8 reliable? We analysed 1,268 real MOT tests across 377 vehicles to find out.
Got a specific Sunbeam S8? Enter the reg for a free check:
The Sunbeam S8 is above average for reliability based on real UK MOT data. Common problems include roller brake test the less effective brake control does not achieve an efficiency of 25%., steering headbearing has excessive free play and roller brake test indicates a binding brake. Here's everything you need to know before buying a used Sunbeam S8.
Sunbeam S8 Number Plates
Number plates registered to a Sunbeam S8. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Sunbeam S8 MOT Pass Rate by Year
How likely is a Sunbeam S8 to pass its MOT? Here's the pass rate for each registration year, newest first.
Sunbeam S8 Problems — What Goes Wrong?
The most common reasons a Sunbeam S8 fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Sunbeam S8 Mileage — What's Normal?
How many miles does a typical Sunbeam S8 owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Sunbeam S8 MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Sunbeam S8 year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 1957 | 67 | 92.5% | 4,348 | 6,862 | 25,536 |
| 1954 | 61 | 93.4% | 1,659 | 6,066 | 18,385 |
| 1952 | 133 | 91.0% | 4,523 | 17,068 | 28,736 |
| 1951 | 195 | 94.9% | 1,843 | 9,868 | 30,314 |
| 1950 | 235 | 91.9% | 3,271 | 9,692 | 22,770 |
| 1949 | 110 | 90.9% | 1,906 | 13,279 | 27,354 |
How Long Does a Sunbeam S8 Last?
Based on 377 Sunbeam S8 vehicles on UK roads.
Sunbeam S8 Mileage Distribution
Total mileage recorded across all Sunbeam S8 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 Sunbeam S8
Based on MOT pass rates across all registration years with sufficient test data.
94.9% MOT pass rate from 195 tests
90.9% MOT pass rate from 110 tests
The best year to buy a used Sunbeam S8 is 1951, which has the highest MOT pass rate at 94.9% across 195 tests. The 1949 model year has the lowest pass rate at 90.9% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Sunbeam S8 Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Sunbeam S8 THIS CAR | 92.3% | 1,268 | 7,722 mi | 77 yrs |
| Sunbeam Alpine | 79.7% | 10,414 | 46,018 mi | 72 yrs |
| Sunbeam Tiger | 86.8% | 3,243 | 32,486 mi | 61 yrs |
| Sunbeam Rapier | 81.5% | 3,083 | 52,906 mi | 68 yrs |
| Mazda 3 SE | 88.9% | 705 | 51,062 mi | — yrs |
Compared to the Sunbeam Alpine (79.7% pass rate) and the Sunbeam Tiger (86.8% pass rate), the Sunbeam S8 outperforms both on MOT reliability.
Found a Sunbeam S8 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 Sunbeam S8Should you buy a used Sunbeam S8?
The Sunbeam S8 has an overall MOT pass rate of 92.3% across 1,268 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 Sunbeam S8 are roller brake test the less effective brake control does not achieve an efficiency of 25%. (7 recorded failures), steering headbearing has excessive free play (6), and roller brake test indicates a binding brake (4). 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 Sunbeam S8 owner drives around 153 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 Sunbeam S8 models stay on UK roads for around 77 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.