Photo: Vauxford, CC BY-SA 4.0
Volkswagen
Caddy C20 Commerce Tdi
1,716 MOT tests analysed. sits above the UK fleet average — here's where Caddy C20 Commerce Tdis pass, fail, and end up on the retest sheet.
That's 6.5 points above the UK fleet average across our 1,984 tracked models — a confident result.
Pass
84.0%
Pass-after-fix
3.7%
Fail
11.7%
Avg miles
48,983
Pass + Pass-after-fix + Fail = 100%
Diesel cars registered from September 2015 generally meet Euro 6 — compliant in London ULEZ, Birmingham CAZ, Bristol CAZ, and Glasgow LEZ.
The picture
Caddy C20 Commerce Tdi: above-average pass rates, with caveats
Across 1,716 MOT tests, the Caddy C20 Commerce Tdi returns 84.0% first-time pass — above the UK fleet average. The single most-logged Major fail is windscreen damage. Tyre tread under the limit and brake pads worn below 1.5 mm round out the top three. Average tested mileage sits at 48,983, 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.
Top ten reasons for rejection.
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- 01
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
78 occurrences · 4.5% of tests
- 02
Tyre tread depth not in accordance with the requirements
43 occurrences · 2.5% of tests
- 03
a brake lining or pad worn below 1.5mm
38 occurrences · 2.2% of tests
- 04
Wiper blade defective
28 occurrences · 1.6% of tests
- 05
A tyre cords visible or damaged
22 occurrences · 1.3% of tests
- 06
A tyre seriously damaged
22 occurrences · 1.3% of tests
- 07
Wiper blade missing or obviously not clearing the windscreen
16 occurrences · 0.9% of tests
- 08
Brake disc or drum significantly and obviously worn
16 occurrences · 0.9% of tests
- 09
Engine MIL illuminated indicating a malfunction
15 occurrences · 0.9% of tests
- 10
Engine MIL illuminated indicating a malfunction
9 occurrences · 0.5% 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 4 failures
£220–£395
If every one of this Caddy C20 Commerce Tdi'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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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
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
Item 02 · 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 03 · Amazon UK
Bosch Aerotwin wiper blades
Cheap wipers fail the test on smear streaks. Bosch Aerotwins last a winter and clear a screen properly.
Search Amazon UK
My Motor World · affiliate
Parts & supplies for this fix
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Click Mechanic · affiliate
Book a mobile mechanic
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Buying or keeping a Caddy C20 Commerce Tdi?
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 Caddy C20 Commerce Tdi 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.