BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025
81.4%
first-time pass rate
10.6%
failed outright
22,366
median miles at test
10.8k
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2005–2025

The CB600's first-time pass rate has fallen 7.3 points since 2005, 90.5% to 83.2%.

74%84%94%2005: 90.5% pass (42 tests)2006: 84.5% pass (233 tests)2007: 84.0% pass (225 tests)2008: 83.4% pass (247 tests)2009: 82.8% pass (250 tests)2010: 83.6% pass (287 tests)2011: 77.9% pass (321 tests)2012: 81.0% pass (337 tests)2013: 77.6% pass (352 tests)2014: 79.4% pass (339 tests)2015: 77.2% pass (320 tests)2016: 80.4% pass (306 tests)2017: 78.6% pass (295 tests)2018: 78.3% pass (217 tests)2019: 80.0% pass (210 tests)2020: 86.7% pass (180 tests)2021: 81.0% pass (1,585 tests)2022: 81.5% pass (1,515 tests)2023: 82.4% pass (1,435 tests)2024: 81.3% pass (1,059 tests)2025: 83.2% pass (1,092 tests)20052025

Pass rate by mileage

how the CB600's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage CB600 passes first time 88.4% of the time; by 50k that's 74.6%.

72%81%91%0k: 88.4% pass (1,702 tests)10k: 84.3% pass (3,013 tests)20k: 80.8% pass (2,621 tests)30k: 77.1% pass (1,836 tests)40k: 74.4% pass (938 tests)50k: 74.6% pass (406 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 CB600

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lamps and reflectors
538 24.2 1.9×
brakes
453 20.4 0.8×
lighting and signalling
249 11.2 0.4×
suspension
211 9.5 2.3×
structure and attachments
178 8 1.8×
steering and suspension
172 7.7 0.4×
tyres
140 6.3 1.6×
tyres and wheels
135 6.1 0.5×
steering
86 3.9 1.7×
drive system
58 2.6 0.6×

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 CB600 beats 1 of its 4 closest rivals (HONDA CB500, TRIUMPH STREET TRIPLE, HONDA CB600 HORNET).

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 CB600.

Pass rate by registration year

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

Best year to buy used: 2010 (89.4% pass). Weakest: 1998 (76.4%).

74%83%92%1998: 76.4% pass (1,226 tests)1999: 79.4% pass (1,340 tests)2000: 82.0% pass (921 tests)2001: 83.3% pass (1,249 tests)2002: 81.4% pass (1,125 tests)2003: 80.9% pass (962 tests)2004: 80.5% pass (395 tests)2005: 79.5% pass (459 tests)2006: 83.4% pass (445 tests)2007: 84.3% pass (851 tests)2008: 83.4% pass (755 tests)2009: 81.6% pass (381 tests)2010: 89.4% pass (330 tests)2011: 85.2% pass (169 tests)2012: 82.8% pass (87 tests)199820052012

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 CB600 FAQ

answers computed from the data above · terms in the glossary

Is the HONDA CB600 reliable?

The HONDA CB600 is less reliable than average for its class: 81.4% of its 10,847 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #3291 of 5426 models.

What does a CB600 fail its MOT on most?

lamps and reflectors — 24% of all defects recorded against failed CB600 tests.

What is the best year of CB600 to buy used?

By first-time pass rate, 2010-registered examples do best (89.4%) and 1998 worst (76.4%). Condition and history still trump the year.

How many miles will a CB600 last?

The median CB600 shows 22,366 miles at test, and examples around 50k miles still pass 74.6% of the time — mileage alone rarely kills one.