KEEWAY RKF 125 E4
The pass rate is the MOT first-time pass: a roadworthiness check of the items an MOT covers (brakes, lights, tyres, steering, structure, emissions), not a full mechanical inspection of engine or gearbox internals. It is a reliability signal, not a complete measure of mechanical reliability. What this measures.
“vs expected” adjusts for age, mileage and test class, so a cherished classic and a hard-used commuter are compared fairly. How this works.
Pass rate over time
The RKF 125 E4's first-time pass rate has risen 2.0 points since 2022, 69.8% to 71.8%.
What fails on a RKF 125 E4
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| lamps and reflectors |
|
117 | 32.4 | 7.6× |
| brakes |
|
80 | 22.2 | 1.9× |
| structure and attachments |
|
67 | 18.6 | 10.3× |
| steering |
|
35 | 9.7 | 10.8× |
| suspension |
|
31 | 8.6 | 6.1× |
| tyres |
|
15 | 4.2 | 2.6× |
| Identification of the vehicle |
|
8 | 2.2 | 4.5× |
| audible warning (Horn) |
|
6 | 1.7 | 4.9× |
| wheels |
|
2 | 0.6 | 5.0× |
Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.
How rivals compare
On first-time pass rate the RKF 125 E4 beats 0 of its 4 closest rivals (YAMAHA YBR 125, HONDA CG125, HONDA CBF125).
Rivals share this bike's type and sit within ±30% of its engine capacity, ≥ 5,000 tests. Card colour = better/worse first-time pass rate than the RKF 125 E4.
Compare with any bike
More KEEWAY models
Pass rate by registration year
Best year to buy used: 2020 (69.1% pass). Weakest: 2019 (63.7%).
First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.
KEEWAY RKF 125 E4 FAQ
Is the KEEWAY RKF 125 E4 reliable?
The KEEWAY RKF 125 E4 is less reliable than average for its class: 68.4% of its 668 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4831 of 5428 models.
What does a RKF 125 E4 fail its MOT on most?
lamps and reflectors — 32% of all defects recorded against failed RKF 125 E4 tests.
What is the best year of RKF 125 E4 to buy used?
By first-time pass rate, 2020-registered examples do best (69.1%) and 2019 worst (63.7%). Condition and history still trump the year.
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