BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025
79.7%
first-time pass rate
9.6%
failed outright
29,412
median miles at test
636
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2017

The CB550F's first-time pass rate has fallen 17.0 points since 2006, 86.2% to 69.2%.

63%81%98%2006: 86.2% pass (65 tests)2007: 92.2% pass (51 tests)2008: 80.8% pass (52 tests)2009: 75.0% pass (44 tests)2010: 84.4% pass (45 tests)2011: 83.8% pass (37 tests)2012: 69.2% pass (39 tests)2013: 71.8% pass (39 tests)2014: 83.7% pass (49 tests)2015: 70.5% pass (44 tests)2016: 74.5% pass (51 tests)2017: 69.2% pass (39 tests)20062017

Pass rate by mileage

how the CB550F's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage CB550F passes first time 75.6% of the time; by 50k that's 86.0%.

72%80%88%0k: 75.6% pass (127 tests)10k: 84.4% pass (64 tests)20k: 77.0% pass (126 tests)30k: 85.4% pass (103 tests)40k: 74.6% pass (67 tests)50k: 86.0% pass (57 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 CB550F

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
48 28.9 1.2×
steering and suspension
44 26.5 1.2×
brakes
29 17.5 0.8×
fuel and exhaust
9 5.4 1.7×
drive system
8 4.8 1.5×
reg plates and vin
8 4.8 2.2×
lamps and reflectors
7 4.2 0.3×
tyres and wheels
6 3.6 0.5×
driving controls
4 2.4 2.7×
body and structure
3 1.8 1.0×

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 CB550F 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 CB550F.

Pass rate by registration year

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

Best year to buy used: 1978 (84.1% pass). Weakest: 1977 (77.9%).

77%81%85%1976: 80.2% pass (247 tests)1977: 77.9% pass (213 tests)1978: 84.1% pass (82 tests)197619771978

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 CB550F FAQ

answers computed from the data above · terms in the glossary

Is the HONDA CB550F reliable?

The HONDA CB550F is less reliable than average for its class: 79.7% of its 636 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #3647 of 5426 models.

What does a CB550F fail its MOT on most?

lighting and signalling — 29% of all defects recorded against failed CB550F tests.

What is the best year of CB550F to buy used?

By first-time pass rate, 1978-registered examples do best (84.1%) and 1977 worst (77.9%). Condition and history still trump the year.

How many miles will a CB550F last?

The median CB550F shows 29,412 miles at test, and examples around 50k miles still pass 86.0% of the time — mileage alone rarely kills one.