BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ KEEWAY/RKF 125 E4
Model report · 2005–2025

KEEWAY RKF 125 E4

125cc Petrol Class 1
#4829 of 5426 overall #6 of 23 KEEWAYs #433 of 734 commuter bikes
68.4%
first-time pass rate
21.9%
failed outright
5,772
median miles at test
668
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2022–2025

The RKF 125 E4's first-time pass rate has risen 2.0 points since 2022, 69.8% to 71.8%.

60%67%74%2022: 69.8% pass (43 tests)2023: 69.1% pass (220 tests)2024: 62.4% pass (197 tests)2025: 71.8% pass (195 tests)20222025

What fails on a RKF 125 E4

failure defects by component group · advisories excluded
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

same type, similar capacity, high test volume

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.

Pass rate by registration year

how each model-year cohort fares · registration year from first use date

Best year to buy used: 2020 (69.1% pass). Weakest: 2019 (63.7%).

63%66%70%2019: 63.7% pass (135 tests)2020: 69.1% pass (440 tests)2021: 65.5% pass (58 tests)201920202021

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

answers computed from the data above · terms in the glossary

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 #4829 of 5426 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.