BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025

HONDA SH300

299cc Petrol Class 2
88.6%
first-time pass rate
7.0%
failed outright
13,014
median miles at test
2,463
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2010–2025

The SH300's first-time pass rate has fallen 3.8 points since 2010, 92.2% to 88.4%.

83%90%97%2010: 92.2% pass (51 tests)2011: 92.2% pass (103 tests)2012: 89.2% pass (157 tests)2013: 87.8% pass (196 tests)2014: 91.0% pass (221 tests)2015: 86.2% pass (254 tests)2016: 85.5% pass (228 tests)2017: 85.0% pass (206 tests)2018: 94.5% pass (146 tests)2019: 85.5% pass (131 tests)2020: 91.0% pass (134 tests)2021: 88.4% pass (164 tests)2022: 91.4% pass (139 tests)2023: 89.0% pass (136 tests)2024: 88.1% pass (101 tests)2025: 88.4% pass (95 tests)20102025

Pass rate by mileage

how the SH300's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage SH300 passes first time 92.1% of the time; by 50k that's 75.7%.

72%84%95%0k: 92.1% pass (958 tests)10k: 87.9% pass (799 tests)20k: 87.8% pass (385 tests)30k: 82.7% pass (185 tests)40k: 78.9% pass (71 tests)50k: 75.7% pass (37 tests)0k30k50k

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 SH300

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
brakes
108 39.7 0.8×
lighting and signalling
44 16.2 0.4×
tyres and wheels
37 13.6 0.6×
lamps and reflectors
30 11 0.7×
steering and suspension
20 7.4 0.3×
suspension
10 3.7 0.6×
tyres
9 3.3 0.5×
structure and attachments
8 2.9 0.4×
reg plates and vin
3 1.1 0.2×
fuel and exhaust
3 1.1 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 SH300 beats 4 of its 4 closest rivals (SUZUKI AN400, YAMAHA RD350, YAMAHA YP250).

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 SH300.

Pass rate by registration year

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

Best year to buy used: 2009 (92.5% pass). Weakest: 2011 (85.8%).

84%89%94%2007: 88.0% pass (548 tests)2008: 88.6% pass (577 tests)2009: 92.5% pass (464 tests)2010: 87.5% pass (432 tests)2011: 85.8% pass (246 tests)2012: 88.1% pass (159 tests)200720102012

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 SH300 FAQ

answers computed from the data above · terms in the glossary

Is the HONDA SH300 reliable?

The HONDA SH300 is more reliable than average for its class: 88.6% of its 2,463 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #1400 of 5426 models.

What does a SH300 fail its MOT on most?

brakes — 40% of all defects recorded against failed SH300 tests.

What is the best year of SH300 to buy used?

By first-time pass rate, 2009-registered examples do best (92.5%) and 2011 worst (85.8%). Condition and history still trump the year.

How many miles will a SH300 last?

The median SH300 shows 13,014 miles at test, and examples around 50k miles still pass 75.7% of the time — mileage alone rarely kills one.