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

HONDA SH 300 A-A

279cc Petrol Class 2
86.4%
first-time pass rate
7.9%
failed outright
13,392
median miles at test
915
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2013–2025

The SH 300 A-A's first-time pass rate has risen 15.7 points since 2013, 84.3% to 100.0%.

73%87%100%2013: 84.3% pass (102 tests)2014: 86.6% pass (119 tests)2015: 85.0% pass (107 tests)2016: 83.5% pass (103 tests)2017: 87.4% pass (95 tests)2018: 88.1% pass (59 tests)2019: 83.3% pass (48 tests)2020: 88.0% pass (50 tests)2021: 86.7% pass (60 tests)2022: 78.4% pass (51 tests)2023: 93.8% pass (48 tests)2024: 90.9% pass (33 tests)2025: 100.0% pass (34 tests)20132025

Pass rate by mileage

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

A low-mileage SH 300 A-A passes first time 89.9% of the time; by 40k that's 84.4%.

77%85%92%0k: 89.9% pass (347 tests)10k: 87.0% pass (284 tests)20k: 82.5% pass (137 tests)30k: 79.5% pass (78 tests)40k: 84.4% pass (32 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-A

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
brakes
43 35.5 0.8×
lighting and signalling
21 17.4 0.5×
tyres and wheels
20 16.5 0.8×
lamps and reflectors
15 12.4 0.9×
steering and suspension
7 5.8 0.3×
suspension
5 4.1 0.7×
tyres
4 3.3 0.5×
reg plates and vin
3 2.5 0.4×
steering
2 1.7 0.5×
structure and attachments
1 0.8 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-A beats 4 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-A.

Pass rate by registration year

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

Best year to buy used: 2011 (87.8% pass). Weakest: 2010 (86.2%).

85%87%89%2010: 86.2% pass (759 tests)2011: 87.8% pass (156 tests)20102011

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-A FAQ

answers computed from the data above · terms in the glossary

Is the HONDA SH 300 A-A reliable?

The HONDA SH 300 A-A is about average for its class: 86.4% of its 915 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #2089 of 5426 models.

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

brakes — 36% of all defects recorded against failed SH 300 A-A tests.

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

The median SH 300 A-A shows 13,392 miles at test, and examples around 40k miles still pass 84.4% of the time — mileage alone rarely kills one.