Pass rate
93.8%
Above average — 7.8 pts ahead of the 86.0% that cars this age and mileage manage.
Across 385 recorded tests.
Typical repair bill £25–£71
2017 Alfa Romeo 4C MOT pass rate
- 2017
- typical 16,457 mi
Most common fault
Tyres
37.8% of faults · 19.8% nationally
mostly tread below the limit, cuts and sidewall bulges.
Part only £55–£85 for Tread depth below 1.6 mm. What fitting it takes →
Which year to buy
- Best 2015 94.6% pass
- Avoid 2018 84.0% pass
Across the 5 years on record, a spread of 10.6 points. See every year →
- First-attempt pass
- 93.5%
- Typical mileage
- 16k mi
The 2017 Alfa Romeo 4C MOT pass rate is 93.8% of its MOT tests — 7.8 points ahead of what its age and mileage predict. Tyres is the biggest single reason it fails, at 37.8% 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: 1.9× the national share
Tyres make up 37.8% of everything recorded on the 2017 Alfa Romeo 4c, against 19.8% nationally — 18.0 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.
- Beats its own age and mileage. Once you allow for how old and how far these cars have been driven, the expected pass rate is 86.0% and this one manages 93.8% — 7.8 points ahead of what its age and mileage predict.
- When it fails, it costs. Only 14% 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 2017 Alfa Romeo 4C compare?
Cars of this age and mileage average 86.0%, so this figure is 7.8 points ahead of what its age and mileage predict. On a first attempt, before any retests, the figure drops to 93.5%. The median 2017 Alfa Romeo 4C in this dataset had covered 16,457 mi.
Pass rates also shift with the test month: tests recorded October–March passed 92.7% of the time, April–September 94.4%.
The single most recorded failure item is "Registration plates does not conform to the specified requirements", noted on 1.56% of tests.
- 385 recorded tests behind this page.
- 93.8% overall pass rate, 93.5% 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
- 385
- Typical mileage (median)
- 16,457 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
Replacement Service Parts
Usually a DIY or independent-garage job.
Does mileage affect the 4C MOT pass rate?
Pass rate by odometer reading. Bar lengths start at 75% so small gaps stay visible.
Regional pass rates for the 4C
| Region | Tests | Pass rate |
|---|---|---|
| South East | 103 | 92.2% |
| East of England | 90 | 95.6% |
| South West | 37 | 89.2% |
| East Midlands | 34 | 97.1% |
| North West | 34 | 100.0% |
| West Midlands | 26 | 96.2% |
| Yorkshire | 18 | 94.4% |
Regions come from the postcode area recorded at the test station. Areas on region borders are assigned to the region with the majority of their population.
What fails a 2017 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 2017 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 number plates 1.6% of tests
“registration plates does not conform to the specified requirements”
Check both plates are present, legible and correctly spaced, with the postcode of the supplier and the BS AU 145e mark. A private plate in the wrong style is a fail before the car is even looked at.
-
Check the suspension joints 1.0% of tests
“ball joint dust cover severely deteriorated”
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 lights 0.8% of tests
“headlamp aim too high”
Switch everything on and walk round the car: both headlamps on dip and main, every indicator, both brake lights, reverse, fog and the two number-plate lamps. A bulb is a few pounds and a five-minute job.
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 2017 4C through its MOT
Across the 10 items that are recorded most often on this model, the average repair comes to £25–£71 — and 14% of those repairs are parts that cost under £30.
- Average repair across the 10 common items
- £25–£71
- Cheapest common item: malfunction indicator lamp inoperative or…
- £3–£12
- Dearest common item: windscreen damaged
- £80–£200
- Common items a careful owner can do at home
- 70%
- Repairs that still cost under £30
- 14%
Estimates from typical UK parts prices, weighted by how often each item appears in 385 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 2017 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 2017 cars with a similar record
- Audi A8 93.8%
- Lexus Nx 93.5%
- Porsche Macan 93.4%
- Porsche Boxster 94.3%
- Mazda Mx-5 93.0%
- Porsche Cayman 94.6%
Closest pass rates among 2017 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 2017 Alfa Romeo 4C 10 failure items · 6 advisories · 10 inspection categories · mileage brackets · all of it in the page, none of it above the fold
Every inspection category
Shares of the 111 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 | 42 | 37.80% | 19.76% | +18.04 |
| Suspension | 21 | 18.90% | 20.98% | −2.08 |
| Brakes | 15 | 13.50% | 20.89% | −7.39 |
| Identification of the vehicle | 10 | 9.00% | 1.76% | +7.24 |
| Visibility | 8 | 7.20% | 4.97% | +2.23 |
| Lamps, reflectors and electrical equipment | 7 | 6.30% | 12.21% | −5.91 |
| Noise, emissions and leaks | 5 | 4.50% | 5.52% | −1.02 |
| Body, chassis, structure | 1 | 0.90% | 5.57% | −4.67 |
| Non-component advisories | 1 | 0.90% | 4.18% | −3.28 |
| Road Wheels | 1 | 0.90% | 0.75% | +0.15 |
The exact failure items, in the tester's words
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Registration plates does not conform to the specified requirements Identification of the vehicle | Major | 1.6% | £20–80 |
| Ball joint dust cover severely deteriorated Suspension | Minor | 1.0% | £18–45 |
| Ball joint excessively worn Suspension | Major | 0.78% | £18–45 |
| Headlamp aim too high Lamps, reflectors and electrical equipment | Major | 0.78% | £30–80 |
| Headlamp aim too low Lamps, reflectors and electrical equipment | Major | 0.52% | £30–80 |
| Malfunction indicator lamp inoperative or indicates a malfunction Noise, emissions and leaks | Rectified | 0.52% | £3–12 |
| Registration plates missing Identification of the vehicle | Major | 0.52% | £20–80 |
| Tread depth below requirements of 1.6mm Tyres | Major | 0.52% | £45–95 |
| Washers provides insufficient washer liquid Visibility | Rectified | 0.52% | £5–15 |
| Windscreen damaged but not adversely affecting driver's view Visibility | Minor | 0.52% | £80–200 |
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 |
|---|---|---|---|
| Tread depth below requirements of 1.6mm Tyres | Advisory | 6.5% | £45–95 |
| Ball joint excessively worn Suspension | Advisory | 2.9% | £18–45 |
| Has a tear, caused by separation or partial failure of its structure Tyres | Advisory | 2.3% | £45–95 |
| Brake discs in such a condition that it is seriously weakened Brakes | Advisory | 1.8% | £45–110 |
| Brake discs significantly and obviously worn Brakes | Advisory | 0.52% | £45–110 |
| Has a cut in excess of the requirements deep enough to reach the ply or cords Tyres | Advisory | 0.52% | £45–95 |
Pass rate by mileage
| Mileage | Tests | Pass rate | Median odometer |
|---|---|---|---|
| 0-30k | 341 | 95.0% | 14,805 mi |
| 30-60k | 42 | 83.3% | 36,824 mi |
| 60-90k | 2 | 100.0% | 67,246 mi |
Source: 385 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.
2017 4C MOT questions
What is the MOT pass rate for a 2017 Alfa Romeo 4C?
93.8% of the 385 2017 Alfa Romeo 4C tests in this dataset passed, against a national average of 86.0% for cars first used in 2017. First-attempt pass rate: 93.5%.
What are the most common MOT failures on a 2017 Alfa Romeo 4C?
The three most recorded items are registration plates does not conform to the specified requirements (1.56%), ball joint dust cover severely deteriorated (1.04%), ball joint excessively worn (0.78%). Percentages are the share of tests on this vehicle that recorded the item.
Does mileage affect the 2017 Alfa Romeo 4C MOT pass rate?
Yes. Cars under 30,000 miles passed 95.0% of the time, falling to 100.0% for those over 120,000 miles. The median 2017 Alfa Romeo 4C in this dataset had covered 16,457 mi.
Does the season affect the 2017 Alfa Romeo 4C MOT pass rate?
Tests recorded in the winter months (October–March) passed 92.7% of the time; summer months (April–September) passed 94.4%. Brakes, tyres and lights are tested harder in bad weather, but the difference is small on most models.