Renault
3,067 MOT tests analysed. lands in the middle of the pack — here's where Trafic Sl28 B Ness Energy Dcis pass, fail, and end up on the retest sheet.
That's in line with the UK fleet average across our 1,984 tracked models.
Pass
78.0%
Pass-after-fix
5.8%
Fail
15.3%
Avg miles
56,721
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.
Performance by cohort
2 year bands · 3,067 tests
Pass rate is broadly flat across the cohorts — new and old Trafic Sl28 B Ness Energy Dci examples track each other at the test bay.
Pass
77.8%
Fail
16.0%
PRS
5.2%
Avg mileage at test
62,455 mi
Pass
78.3%
Fail
14.4%
PRS
6.6%
Avg mileage at test
49,409 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.
The picture
Across 951 MOT tests, the Trafic Sl28 B-Ness+ Energy Dci returns 80.7% first-time pass — above the UK fleet average. The single most-logged Major fail is brake pads worn below 1.5 mm. Windscreen damage and a seriously damaged tyre round out the top three. Average tested mileage sits at 52,402, 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
Above average — worth comparing quotes before buying. 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 →
22–30
out of 50
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Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
103 occurrences · 3.4% of tests
a brake lining or pad worn below 1.5mm
81 occurrences · 2.6% of tests
A suspension pin, bush or joint excessively worn
56 occurrences · 1.8% of tests
A shock absorber damaged to the extent that it does not function or showing signs of severe leakage
55 occurrences · 1.8% of tests
A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources
50 occurrences · 1.6% of tests
A steering ball joint with excessive wear or free play
46 occurrences · 1.5% of tests
Engine MIL illuminated indicating a malfunction
36 occurrences · 1.2% of tests
A tyre seriously damaged
31 occurrences · 1.0% of tests
Tyre tread depth not in accordance with the requirements
29 occurrences · 0.9% of tests
Wiper blade missing or obviously not clearing the windscreen
26 occurrences · 0.8% 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 3 failures
£168–£435
If every one of this Trafic Sl28 B Ness Energy Dci'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 →
Try the calculator
Build your own retest budget.
Year-band analysis
First-time MOT pass rate split by registration band. Pass rates barely move across bands here, so the year you buy Renault Trafic Sl28 B Ness Energy Dci makes little measurable difference to MOT outcomes.
Best band to buy
78.3%
2021+ registration
the 2021-on band climbs to 78.3% — a 0.5-point improvement. Tests in this band average 49,409 miles — roughly 13K miles fewer on the clock than the older band. Failures here are mostly wear items: damaged but not adversely affecting driver's view, less than 1.5 mm thick — the structural issues that drag down older examples don't appear in the top-10 for this band. Post-2020 examples are early in their MOT life and generally show the cleanest records.
Band to be cautious about
77.8%
2018–2020 registration
On the 2018–2020 band, the data shows a 77.8% pass rate against a fleet average of 78.3% on the newer band. The main culprits logged at test: ball joint excessively worn, damaged but not adversely affecting driver's view, and ball joint has excessive play. Average mileage on test for this band is 62,455 miles — high-mileage wear items are a recurring theme.
Best band to buy: 2021+ (78.3% first-time pass). Worst band to avoid: 2018-2020 (77.8% pass). That's a 0.5-point spread across 1,720 older tests and 1,347 newer ones — year of build makes a material difference on this model.
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
H7 / W21W bulb pack
A spare-bulb kit lives in the boot. Test morning is not the time to find your stop-lamp's gone.
Search Amazon UK
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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 Trafic Sl28 B Ness Energy Dci 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.
