BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ SUZUKI/RV 125 K9
Model report · 2005–2025

SUZUKI RV 125 K9

124cc Petrol Class 1
84.2%
first-time pass rate
7.7%
failed outright
7,458
median miles at test
2,102
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2012–2025

The RV 125 K9's first-time pass rate has risen 2.3 points since 2012, 82.4% to 84.7%.

76%85%93%2012: 82.4% pass (176 tests)2013: 81.8% pass (198 tests)2014: 86.1% pass (208 tests)2015: 84.3% pass (210 tests)2016: 82.3% pass (192 tests)2017: 85.6% pass (167 tests)2018: 86.7% pass (120 tests)2019: 83.3% pass (120 tests)2020: 87.9% pass (116 tests)2021: 83.6% pass (128 tests)2022: 78.7% pass (127 tests)2023: 83.6% pass (122 tests)2024: 90.5% pass (95 tests)2025: 84.7% pass (98 tests)20122025

Pass rate by mileage

how the RV 125 K9's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage RV 125 K9 passes first time 86.7% of the time; by 30k that's 76.9%.

74%82%89%0k: 86.7% pass (1,296 tests)10k: 81.6% pass (582 tests)20k: 76.5% pass (149 tests)30k: 76.9% pass (52 tests)0k20k30k

First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.

What fails on a RV 125 K9

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
brakes
71 22.9 0.6×
lighting and signalling
47 15.2 0.4×
steering and suspension
44 14.2 0.5×
lamps and reflectors
35 11.3 0.8×
drive system
34 11 1.8×
structure and attachments
30 9.7 1.6×
suspension
22 7.1 1.3×
tyres
12 3.9 0.8×
steering
8 2.6 0.9×
tyres and wheels
7 2.3 0.2×

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 RV 125 K9 beats 4 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 RV 125 K9.

Pass rate by registration year

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

Best year to buy used: 2011 (88.1% pass). Weakest: 2008 (81.5%).

80%85%89%2008: 81.5% pass (276 tests)2009: 84.0% pass (1,371 tests)2010: 86.0% pass (379 tests)2011: 88.1% pass (67 tests)200820102011

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.

SUZUKI RV 125 K9 FAQ

answers computed from the data above · terms in the glossary

Is the SUZUKI RV 125 K9 reliable?

The SUZUKI RV 125 K9 is more reliable than average for its class: 84.2% of its 2,102 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #2689 of 5426 models.

What does a RV 125 K9 fail its MOT on most?

brakes — 23% of all defects recorded against failed RV 125 K9 tests.

What is the best year of RV 125 K9 to buy used?

By first-time pass rate, 2011-registered examples do best (88.1%) and 2008 worst (81.5%). Condition and history still trump the year.

How many miles will a RV 125 K9 last?

The median RV 125 K9 shows 7,458 miles at test, and examples around 30k miles still pass 76.9% of the time — mileage alone rarely kills one.