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

KEEWAY RKS 125 SPORT E4

125cc Petrol Class 1
#4818 of 5426 overall #5 of 23 KEEWAYs #425 of 734 commuter bikes
68.6%
first-time pass rate
21.2%
failed outright
5,853
median miles at test
490
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2020–2025

The RKS 125 SPORT E4's first-time pass rate has fallen 6.3 points since 2020, 74.4% to 68.1%.

64%70%77%2020: 74.4% pass (39 tests)2021: 72.5% pass (91 tests)2022: 68.6% pass (105 tests)2023: 66.7% pass (114 tests)2024: 65.7% pass (67 tests)2025: 68.1% pass (72 tests)20202025

What fails on a RKS 125 SPORT E4

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lamps and reflectors
87 31.2
structure and attachments
64 22.9
brakes
49 17.6
suspension
34 12.2
steering
25 9
tyres
12 4.3
Identification of the vehicle
4 1.4
audible warning (Horn)
2 0.7
lighting and signalling
1 0.4
wheels
1 0.4

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the RKS 125 SPORT 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 RKS 125 SPORT E4.

Pass rate by registration year

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

Best year to buy used: 2017 (73.2% pass). Weakest: 2018 (66.2%).

65%70%75%2017: 73.2% pass (138 tests)2018: 66.2% pass (201 tests)2019: 68.5% pass (92 tests)2020: 66.7% pass (51 tests)201720192020

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.