Rolls Royce 20HP Reliability, MOT Pass Rate & Common Faults
Free Rolls Royce 20HP car check
Is the Rolls Royce 20HP reliable? We analysed 598 real MOT tests across 101 vehicles to find out.
Got a specific Rolls Royce 20HP? Enter the reg for a free check:
The Rolls Royce 20HP is above average for reliability based on real UK MOT data. Common problems include leaf spring anchor pin retaining device missing, brake linkage locking device missing and reflector missing. Here's everything you need to know before buying a used Rolls Royce 20HP.
Rolls Royce 20HP Number Plates
Number plates registered to a Rolls Royce 20HP. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Rolls Royce 20HP MOT Pass Rate by Year
How likely is a Rolls Royce 20HP to pass its MOT? Here's the pass rate for each registration year, newest first.
Rolls Royce 20HP Problems — What Goes Wrong?
The most common reasons a Rolls Royce 20HP fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Rolls Royce 20HP Mileage — What's Normal?
How many miles does a typical Rolls Royce 20HP owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Rolls Royce 20HP MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Rolls Royce 20HP year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 1929 | 68 | 98.5% | 19,621 | 28,487 | 47,493 |
| 1928 | 77 | 93.5% | 31,218 | 54,794 | 65,404 |
| 1927 | 86 | 97.7% | 3,558 | 8,160 | 42,999 |
| 1926 | 95 | 96.8% | 2,826 | 6,669 | 12,607 |
| 1924 | 51 | 94.1% | 4,080 | 7,660 | 22,170 |
How Long Does a Rolls Royce 20HP Last?
Based on 101 Rolls Royce 20HP vehicles on UK roads.
Rolls Royce 20HP Mileage Distribution
Total mileage recorded across all Rolls Royce 20HP 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 Rolls Royce 20HP
Based on MOT pass rates across all registration years with sufficient test data.
98.5% MOT pass rate from 68 tests
93.5% MOT pass rate from 77 tests
The best year to buy a used Rolls Royce 20HP is 1929, which has the highest MOT pass rate at 98.5% across 68 tests. The 1928 model year has the lowest pass rate at 93.5% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Rolls Royce 20HP Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Rolls Royce 20HP THIS CAR | 96.5% | 598 | 15,104 mi | 102 yrs |
| Rolls Royce Silver Spirit | 79.1% | 34,506 | 71,622 mi | 47 yrs |
| Rolls Royce Silver Shadow | 80.3% | 16,278 | 62,466 mi | 59 yrs |
| Rolls Royce Phantom | 93.4% | 14,291 | 29,293 mi | 55 yrs |
| Audi A3 S Line 35 TDI | 89.2% | 1,110 | 41,363 mi | — yrs |
Compared to the Rolls Royce Silver Spirit (79.1% pass rate) and the Rolls Royce Silver Shadow (80.3% pass rate), the Rolls Royce 20HP outperforms both on MOT reliability.
Found a Rolls Royce 20HP 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 Rolls Royce 20HPShould you buy a used Rolls Royce 20HP?
The Rolls Royce 20HP has an overall MOT pass rate of 96.5% across 598 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 Rolls Royce 20HP are leaf spring anchor pin retaining device missing (2 recorded failures), brake linkage locking device missing (2), and reflector 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 Rolls Royce 20HP owner drives around 344 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 Rolls Royce 20HP models stay on UK roads for around 102 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.