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Honda
CB 650 RA K
1,600 MOT tests analysed. sits above the UK fleet average — here's where CB 650 RA Ks pass, fail, and end up on the retest sheet.
That's 12.4 points above the UK fleet average across our 1,984 tracked models — a confident result.
Pass
89.9%
Pass-after-fix
5.4%
Fail
4.5%
Avg miles
10,341
Pass + Pass-after-fix + Fail = 100%
Petrol cars first registered from January 2006 meet Euro 4 — compliant in London ULEZ, Birmingham CAZ, Bristol CAZ, and Glasgow LEZ.
The picture
Cb 650 Ra-K: a strong MOT record by UK norms
Across 1,168 MOT tests, the Cb 650 Ra-K returns 88.4% first-time pass — comfortably ahead of the UK fleet average. The single most-logged Major fail is wheel bearing with excessive play. Brake pads worn below 1.0 mm and tyre tread under the limit round out the top three. Average tested mileage sits at 8,524, which is the lens to read those failure rankings through. If you own one and the next test is close, the ranked list below is a sensible pre-test checklist.
ABI Insurance Group
Group 10–26
Below the fleet average — generally reasonable to insure. Lower groups cost less to insure; UK fleet average is around Group 22.
Source: ABI Group Rating Panel · administered by Thatcham Research · groups cover standard variants; performance trims may sit higher. Browse all insurance groups →
10–26
out of 50
Top ten reasons for rejection.
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- 01
Brake lining or pad worn below 1.0mm
16 occurrences · 1.0% of tests
- 02
A wheel bearing with excessive play
10 occurrences · 0.6% of tests
- 03
Excessive fluctuation in brake effort through each wheel revolution
10 occurrences · 0.6% of tests
- 04
Tyre tread depth not in accordance with the requirements
7 occurrences · 0.4% of tests
- 05
A footrest missing or insecure
7 occurrences · 0.4% of tests
- 06
Significant brake effort recorded with no brake applied indicating a binding brake
7 occurrences · 0.4% of tests
- 07
A rear registration plate lamp throwing direct white light to the rear
5 occurrences · 0.3% of tests
- 08
Number plate does not conform to the specified requirements
5 occurrences · 0.3% of tests
- 09
Handlebar grip insecure to handlebar
4 occurrences · 0.3% of tests
- 10
A wheel bearing play so excessive it is likely to break up or directional control impaired
4 occurrences · 0.3% of tests
Counts cover Major and Dangerous defects logged at test. Advisory items excluded so this shows why a car was rejected, not just what the tester flagged in passing.
Worst-case fix budget · top 2 failures
£140–£255
If every one of this CB 650 RA K's most-logged Major fails hit at the same MOT, that's the real-world UK garage range. Reality is usually one or two items, not all of them. Open the estimator →
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Build your own retest budget.
Tools that pre-empt a retest.
Picked against this car's top failure patterns. Affiliate links to Amazon UK — we earn a small cut at no cost to you. Disclosed up-front, doesn't shape the data.
Item 01 · Amazon UK
Brake pad measurement gauge
Testers fail pads under 1.5mm. A wear gauge tells you if you've got two months left or two weeks.
Search Amazon UK
Item 02 · Amazon UK
Digital tyre-tread depth gauge
Five quid for a gauge beats £150 for a retest. UK MOT minimum is 1.6mm — most testers fail anything below 2mm to be safe.
Search Amazon UK
My Motor World · affiliate
Parts & supplies for this fix
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Draper
Draper Drain Plug Key, 3/8 Square x 3/8 Sq. Dr.
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Hycote
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Hycote Honda Satin Silver Metallic Double Acrylic Spray Paint 150ml
£6.59
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Click Mechanic · affiliate
Book a mobile mechanic
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Mobile mechanic · UK-wide
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Buying or keeping a CB 650 RA K?
Use the failure ranking as a pre-test checklist or a haggling lever. Treat the headline pass rate as a fleet-wide trend, not a guarantee on any individual car.
If you own a CB 650 RA K and your last MOT looked nothing like the ranked failures above, that's normal — individual cars vary widely. The ranking shows the patterns testers flag most often across the country.