Pass rate
84.0%
Around average — 3.9 pts behind the 87.9% that cars this age and mileage manage.
Across 50 recorded tests.
Typical repair bill £33–£100
2018 Alfa Romeo 4C MOT pass rate
- 2018
- typical 15,255 mi
Only 50 tests of this exact model and year are in the DVSA data, below the 100 we ask for before a page goes in the index. The figures are still shown, because they are the only ones there are.
Most common fault
Tyres
30.3% of faults · 19.8% nationally
mostly tread below the limit, cuts and sidewall bulges.
Which year to buy
- Best 2015 94.6% pass
- Avoid 2018 84.0% pass · this year
Across the 5 years on record, a spread of 10.6 points. See every year →
- First-attempt pass
- 81.8%
- Typical mileage
- 15k mi
The 2018 Alfa Romeo 4C MOT pass rate is 84.0% of its MOT tests — 3.9 points behind what its age and mileage predict. Tyres is the biggest single reason it fails, at 30.3% of what testers record.
Check your postcode
MOT pass rates are national — type your postcode to see how Alfa Romeo 4C does in your corner of the country.
Expert verdict
Tyres: 1.5× the national share
Tyres make up 30.3% of everything recorded on the 2018 Alfa Romeo 4c, against 19.8% nationally — 10.5 points above. Check all four tyres yourself, including the inner shoulders, and look at the date stamp — a tyre can pass on tread and still be six years old.
- Falls short of its own age and mileage. Like-for-like, cars this age and mileage expect about 87.9%; this one manages 84.0% — 3.9 points below. Age is a fair excuse; this is not age.
- When it fails, it costs. Only 27% of this model’s typical repairs come in under £30 in parts — the failures here tend to be the kind that need a garage rather than a bulb.
Written from this page's own figures: fault shares against the national composition, the like-for-like pass rate, and the priced repair list. How these are worked out
Watching a Alfa Romeo 4C? Get an email when these numbers change .
How does the 2018 Alfa Romeo 4C compare?
Cars of this age and mileage average 87.9%, so this figure is 3.9 points behind what its age and mileage predict. On a first attempt, before any retests, the figure drops to 81.8%. The median 2018 Alfa Romeo 4C in this dataset had covered 15,255 mi.
The single most recorded failure item is "Washers provides insufficient washer liquid", noted on 4.00% of tests.
- 50 recorded tests behind this page.
- 84.0% overall pass rate, 81.8% on a first attempt.
- Across every year of the Alfa Romeo 4C, the average is 93.4% — best year 2015 (94.6%), worst 2018 (84.0%).
Figures count every completed test on this vehicle-year in the dataset, including retests. See methodology for the exact definition.
This page's data
- Tests analysed
- 50
- Typical mileage (median)
- 15,255 mi
- Make and model
- Alfa Romeo 4C
- Updated
- 2026-11-05
Source: DVSA anonymised MOT test data (2023–2025), OGL v3.0.
Top part to budget for
Windscreen Washer
Usually a DIY or independent-garage job.
Does mileage affect the 4C MOT pass rate?
Pass rate by odometer reading. Bar lengths start at 42% so small gaps stay visible.
What fails a 2018 4C
Everything a tester recorded on this vehicle, grouped into the inspection sections that produced it. The notch on each bar is the national share, so you can see at a glance whether this car is unusual or just ordinary.
A test can record several items, so these percentages do not add up to 100%. The exact strings, with prices, are in the full DVSA record at the bottom of this page.
Before your test
Three checks worth doing on a 2018 4C
These are not generic tips — they are the faults recorded most often on this exact model, rewritten as things you can check yourself. All three take about ten minutes and cost nothing.
-
Check the wipers and washers 4.0% of tests
“washers provides insufficient washer liquid”
Run the wipers with the screen wet: they should clear it in one sweep without smearing or juddering. Top the washer bottle up and check both jets hit the screen.
-
Check the suspension joints 2.0% of tests
“ball joint excessively worn”
With the car parked on level ground, rock the top of each front wheel in and out while someone watches the suspension arm. Clunks, or rubber boots split and greasy, are what testers record here.
-
Check the exhaust and emissions 2.0% of tests
“catalyst emissions Lambda reading after 2nd fast idle outside specified limits”
Listen for a blow at idle and have someone rev it gently. Then look at the tailpipe smoke: blue is oil, white when warm is coolant, black is over-fuelling. Any of those and the emissions test is the least of it.
Shares are the proportion of tests on this vehicle that recorded the item, so they overlap: one test can record several.
What it costs to get a 2018 4C through its MOT
Across the 10 items that are recorded most often on this model, the average repair comes to £33–£100 — and 27% of those repairs are parts that cost under £30.
- Average repair across the 10 common items
- £33–£100
- Cheapest common item: washers provides insufficient washer liquid
- £5–£15
- Dearest common item: catalyst emissions lambda reading after 2nd…
- £60–£250
- Common items a careful owner can do at home
- 50%
- Repairs that still cost under £30
- 27%
Estimates from typical UK parts prices, weighted by how often each item appears in 50 MOT tests on this vehicle. They exclude diagnostics, retest fees and garage labour where the part is a DIY fit, and they are not figures from the DVSA dataset. Older and higher-mileage examples cost more than the average. How these estimates are built → · All MOT repair costs → · Cheapest cars to put through a test →
Every year of the 4C, side by side
5 model years on record, from 2014 to 2018. Across them the pass rate runs from 84.0% to 94.6% — a spread of 10.6 points. The bar under each year is the item that failed it most often.
- 2014 94.3% ball joint dust cover severely…
- 2015 94.6% catalyst emissions lambda reading…
- 2016 92.9% washers provides insufficient…
- 2017 93.8% registration plates does not…
- 2018 84.0%washers provides insufficient…
Colour is the pass rate on a fixed scale, so a block means the same thing on any model. Each year links to its own page with the full fault breakdown.
Compare the 2018 Alfa Romeo 4C with another year
The raw pass rate mostly measures age. The year comparison adds the like-for-like figure, the mileage bands and the repair bill.
Other 2018 cars with a similar record
- Peugeot Horizon 84.0%
- Tesla Model X 84.0%
- MG Zs 83.9%
- Dacia Logan 83.9%
- SEAT Toledo 84.1%
- Vauxhall Mokka 84.2%
Closest pass rates among 2018 cars with at least 2,000 tests, so a small sample cannot flatter itself into the list. See the full rankings: best and worst MOT pass rates.
The full DVSA record for the 2018 Alfa Romeo 4C 10 failure items · 6 advisories · 8 inspection categories · mileage brackets · all of it in the page, none of it above the fold
Every inspection category
Shares of the 33 individual items recorded on this vehicle, and the same share across all cars nationally. A single test can record several items, so a row is not a percentage of tests.
| Category | Items | This car | Nationally | Difference |
|---|---|---|---|---|
| Tyres | 10 | 30.30% | 19.76% | +10.54 |
| Brakes | 7 | 21.20% | 20.89% | +0.31 |
| Lamps, reflectors and electrical equipment | 3 | 9.10% | 12.21% | −3.11 |
| Body, chassis, structure | 3 | 9.10% | 5.57% | +3.53 |
| Noise, emissions and leaks | 3 | 9.10% | 5.52% | +3.58 |
| Visibility | 3 | 9.10% | 4.97% | +4.13 |
| Suspension | 2 | 6.10% | 20.98% | −14.88 |
| Identification of the vehicle | 2 | 6.10% | 1.76% | +4.34 |
The exact failure items, in the tester's words
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Washers provides insufficient washer liquid Visibility | Major | 4.0% | £5–15 |
| Ball joint excessively worn Suspension | Major | 2.0% | £18–45 |
| Catalyst emissions Lambda reading after 2nd fast idle outside specified limits Noise, emissions and leaks | Major | 2.0% | £60–250 |
| Coil spring fractured or broken Suspension | Major | 2.0% | £25–65 |
| Exhaust system has a major leak of exhaust gases Body, chassis, structure | Major | 2.0% | £45–120 |
| Exhaust system system insecure Body, chassis, structure | Major | 2.0% | £45–120 |
| Hand lever has insufficient reserve travel Brakes | Major | 2.0% | £45–110 |
| Headlamp aim too high Lamps, reflectors and electrical equipment | Major | 2.0% | £30–80 |
| Horn not working Lamps, reflectors and electrical equipment | Major | 2.0% | £8–25 |
| Joints constant velocity boot split or insecure, no longer prevents the ingress of dirt Body, chassis, structure | Major | 2.0% | £80–250 |
Severity is as recorded: Major and Dangerous fail the test outright; Minor and Advisory do not. Costs are estimates from typical UK parts prices — see how they are built.
What testers noted without failing the car
Advisories are the early warnings — the same parts a year or two before they fail. Reading them is how you tell a car that has been maintained from one that has been patched.
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Brake discs in such a condition that it is seriously weakened Brakes | Advisory | 10.0% | £45–110 |
| Tread depth below requirements of 1.6mm Tyres | Advisory | 10.0% | £45–95 |
| Has a tear, caused by separation or partial failure of its structure Tyres | Advisory | 6.0% | £45–95 |
| Has a cut in excess of the requirements deep enough to reach the ply or cords Tyres | Advisory | 2.0% | £45–95 |
| Registration plates insecure Identification of the vehicle | Advisory | 2.0% | £20–80 |
| Tread depth tread pattern not visible over the whole tread area when minimum depth required is 1.0mm Tyres | Advisory | 2.0% | £45–95 |
Pass rate by mileage
| Mileage | Tests | Pass rate | Median odometer |
|---|---|---|---|
| 0-30k | 46 | 84.8% | 14,439 mi |
| 30-60k | 2 | 100.0% | 52,369 mi |
| 60-90k | 2 | 50.0% | 63,049 mi |
Source: 50 recorded tests on this vehicle-year. Every row above is recomputed from the same DVSA extract as the rest of the page — see the methodology.
2018 4C MOT questions
What is the MOT pass rate for a 2018 Alfa Romeo 4C?
84.0% of the 50 2018 Alfa Romeo 4C tests in this dataset passed, against a national average of 87.9% for cars first used in 2018. First-attempt pass rate: 81.8%.
What are the most common MOT failures on a 2018 Alfa Romeo 4C?
The three most recorded items are washers provides insufficient washer liquid (4.00%), ball joint excessively worn (2.00%), catalyst emissions lambda reading after 2nd fast idle outside specified limits (2.00%). Percentages are the share of tests on this vehicle that recorded the item.
Does mileage affect the 2018 Alfa Romeo 4C MOT pass rate?
Yes. Cars under 30,000 miles passed 84.8% of the time, falling to 50.0% for those over 120,000 miles. The median 2018 Alfa Romeo 4C in this dataset had covered 15,255 mi.