SUZUKI RV 125 K4

124cc Petrol Class 1

#3854 of 5426 overall #534 of 680 SUZUKIs #141 of 734 commuter bikes

78.4%

first-time pass rate

13.1%

failed outright

10,910

median miles at test

4,147

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2007–2025

The RV 125 K4's first-time pass rate has fallen 5.2 points since 2007, 82.0% to 76.8%.

Pass rate by mileage

how the RV 125 K4's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage RV 125 K4 passes first time 84.1% of the time; by 40k that's 63.5%.

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 K4

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	226	18.9	1.0×
brakes	220	18.4	1.0×
steering and suspension	217	18.1	1.4×
drive system	165	13.8	3.6×
lamps and reflectors	121	10.1	1.2×
structure and attachments	74	6.2	1.7×
tyres and wheels	61	5.1	0.7×
suspension	54	4.5	1.5×
body and structure	41	3.4	1.6×
steering	19	1.6	1.0×

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 RV 125 K4 beats 4 of its 4 closest rivals (YAMAHA YBR 125, HONDA CG125, HONDA CBF125).

YAMAHA YBR 125 71.0% pass · 125k tests HONDA CG125 72.2% pass · 89.3k tests HONDA CBF125 73.3% pass · 84.4k tests GILERA RUNNER 70.8% pass · 69.9k tests

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 K4.

Pass rate by registration year

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

Best year to buy used: 2006 (83.0% pass). Weakest: 2004 (77.5%).

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 K4 FAQ

answers computed from the data above · terms in the glossary

Is the SUZUKI RV 125 K4 reliable?

The SUZUKI RV 125 K4 is more reliable than average for its class: 78.4% of its 4,147 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #3854 of 5426 models.

What does a RV 125 K4 fail its MOT on most?

lighting and signalling — 19% of all defects recorded against failed RV 125 K4 tests.

What is the best year of RV 125 K4 to buy used?

By first-time pass rate, 2006-registered examples do best (83.0%) and 2004 worst (77.5%). Condition and history still trump the year.

How many miles will a RV 125 K4 last?

The median RV 125 K4 shows 10,910 miles at test, and examples around 40k miles still pass 63.5% of the time — mileage alone rarely kills one.