BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ HONDA/SH 300 A-9
Model report · 2005–2025

HONDA SH 300 A-9

279cc Petrol Class 2
85.3%
first-time pass rate
8.3%
failed outright
13,482
median miles at test
1,117
MOT tests, 2005–2025

Pass rate over time

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

The SH 300 A-9's first-time pass rate has fallen 9.0 points since 2012, 84.0% to 75.0%.

71%83%96%2012: 84.0% pass (81 tests)2013: 82.0% pass (122 tests)2014: 84.9% pass (126 tests)2015: 87.6% pass (113 tests)2016: 85.8% pass (120 tests)2017: 83.5% pass (97 tests)2018: 82.6% pass (69 tests)2019: 89.1% pass (64 tests)2020: 85.2% pass (54 tests)2021: 85.9% pass (64 tests)2022: 91.7% pass (60 tests)2023: 88.3% pass (60 tests)2024: 90.7% pass (43 tests)2025: 75.0% pass (40 tests)20122025

Pass rate by mileage

how the SH 300 A-9's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage SH 300 A-9 passes first time 88.5% of the time; by 40k that's 87.5%.

80%85%90%0k: 88.5% pass (418 tests)10k: 83.4% pass (355 tests)20k: 81.8% pass (170 tests)30k: 88.7% pass (97 tests)40k: 87.5% pass (40 tests)0k20k40k

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 SH 300 A-9

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
brakes
63 41.4 0.9×
lighting and signalling
25 16.4 0.4×
tyres and wheels
22 14.5 0.9×
lamps and reflectors
14 9.2 0.6×
steering and suspension
10 6.6 0.2×
tyres
7 4.6 0.8×
suspension
5 3.3 0.6×
reg plates and vin
3 2 0.3×
body and structure
2 1.3 0.4×
steering
1 0.7 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 SH 300 A-9 beats 3 of its 4 closest rivals (YAMAHA RD350, YAMAHA YP250, YAMAHA WR250F).

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 SH 300 A-9.

Pass rate by registration year

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

Best year to buy used: 2010 (85.5% pass). Weakest: 2009 (85.0%).

84%85%86%2009: 85.0% pass (692 tests)2010: 85.5% pass (385 tests)20092010

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.

HONDA SH 300 A-9 FAQ

answers computed from the data above · terms in the glossary

Is the HONDA SH 300 A-9 reliable?

The HONDA SH 300 A-9 is about average for its class: 85.3% of its 1,117 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #2411 of 5426 models.

What does a SH 300 A-9 fail its MOT on most?

brakes — 41% of all defects recorded against failed SH 300 A-9 tests.

How many miles will a SH 300 A-9 last?

The median SH 300 A-9 shows 13,482 miles at test, and examples around 40k miles still pass 87.5% of the time — mileage alone rarely kills one.