BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ YAMAHA/YP 400 R X-MAX
Model report · 2005–2025

YAMAHA YP 400 R X-MAX

395cc Petrol Class 2
85.9%
first-time pass rate
7.2%
failed outright
12,059
median miles at test
333
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2016–2022

The YP 400 R X-MAX's first-time pass rate has fallen 1.1 points since 2016, 84.4% to 83.3%.

82%85%88%2016: 84.4% pass (64 tests)2017: 85.2% pass (54 tests)2018: 85.3% pass (34 tests)2019: 85.0% pass (40 tests)2021: 87.1% pass (31 tests)2022: 83.3% pass (30 tests)20162022

Pass rate by mileage

how the YP 400 R X-MAX's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage YP 400 R X-MAX passes first time 92.8% of the time; by 20k that's 86.2%.

73%84%96%0k: 92.8% pass (139 tests)10k: 76.0% pass (96 tests)20k: 86.2% pass (65 tests)0k10k20k

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 YP 400 R X-MAX

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
brakes
7 18.9
lighting and signalling
6 16.2
tyres
5 13.5
steering
5 13.5
tyres and wheels
4 10.8
suspension
4 10.8
lamps and reflectors
3 8.1
wheels
1 2.7
fuel and exhaust
1 2.7
steering and suspension
1 2.7

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 YP 400 R X-MAX beats 3 of its 4 closest rivals (KAWASAKI ER5, SUZUKI GS500, SUZUKI AN400).

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 YP 400 R X-MAX.

Pass rate by registration year

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

Best year to buy used: 2013 (86.4% pass). Weakest: 2013 (86.4%).

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.