Yamaha RD400 Reliability, MOT Pass Rate & Common Faults
Free Yamaha RD400 car check
Is the Yamaha RD400 reliable? We analysed 3,222 real MOT tests across 643 vehicles to find out.
Got a specific Yamaha RD400? Enter the reg for a free check:
The Yamaha RD400 is above average for reliability based on real UK MOT data. Common problems include direction indicator not working, roller brake test indicates a binding brake and stop lamp does not illuminate immediately a brake applies. Here's everything you need to know before buying a used Yamaha RD400.
Yamaha RD400 Number Plates
Number plates registered to a Yamaha RD400. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Yamaha RD400 MOT Pass Rate by Year
How likely is a Yamaha RD400 to pass its MOT? Here's the pass rate for each registration year, newest first.
Yamaha RD400 Problems — What Goes Wrong?
The most common reasons a Yamaha RD400 fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Yamaha RD400 Mileage — What's Normal?
How many miles does a typical Yamaha RD400 owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Yamaha RD400 MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Yamaha RD400 year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 2012 | 53 | 88.7% | 10,366 | 21,547 | 24,917 |
| 1981 | 142 | 90.1% | 8,620 | 14,320 | 20,992 |
| 1980 | 442 | 89.1% | 15,469 | 20,454 | 29,514 |
| 1979 | 603 | 89.7% | 15,832 | 22,838 | 29,157 |
| 1978 | 637 | 89.0% | 11,454 | 20,029 | 27,460 |
| 1977 | 485 | 88.7% | 9,566 | 18,996 | 26,098 |
| 1976 | 428 | 88.8% | 12,136 | 20,381 | 26,962 |
How Long Does a Yamaha RD400 Last?
Based on 643 Yamaha RD400 vehicles on UK roads.
Yamaha RD400 Mileage Distribution
Total mileage recorded across all Yamaha RD400 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 Yamaha RD400
Based on MOT pass rates across all registration years with sufficient test data.
90.1% MOT pass rate from 142 tests
88.7% MOT pass rate from 485 tests
The best year to buy a used Yamaha RD400 is 1981, which has the highest MOT pass rate at 90.1% across 142 tests. The 1977 model year has the lowest pass rate at 88.7% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Yamaha RD400 Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Yamaha RD400 THIS CAR | 89.4% | 3,222 | 19,930 mi | 50 yrs |
| Yamaha Yzf R1 | 86.5% | 175,313 | 16,232 mi | 28 yrs |
| Yamaha FZS600 | 85% | 157,659 | 22,466 mi | 28 yrs |
| Yamaha XJR1300 | 88.8% | 107,128 | 16,836 mi | 27 yrs |
| Suzuki TS185 | 81.2% | 1,247 | 10,030 mi | 50 yrs |
Compared to the Yamaha Yzf R1 (86.5% pass rate) and the Yamaha FZS600 (85.0% pass rate), the Yamaha RD400 outperforms both on MOT reliability.
Found a Yamaha RD400 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 Yamaha RD400Should you buy a used Yamaha RD400?
The Yamaha RD400 has an overall MOT pass rate of 89.4% across 3,222 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 Yamaha RD400 are direction indicator not working (19 recorded failures), roller brake test indicates a binding brake (19), and stop lamp does not illuminate immediately a brake applies (15). 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 Yamaha RD400 owner drives around 174 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 Yamaha RD400 models stay on UK roads for around 50 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.