Pass rate
93.9%
Above average — 11.8 pts ahead of the 82.1% that cars this age and mileage manage.
Across 82 recorded tests.
Typical repair bill £17–£50
2015 Smc Cg MOT pass rate
- 2015
- typical 3,681 mi
Only 82 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.
Check your postcode
Most common fault
Suspension
51.3% of faults · 21.0% nationally
mostly worn arm bushes, split ball-joint boots and broken coil springs.
Which year to buy
- Best 2014 97.4% pass
- Avoid 2016 89.9% pass
Across the 3 years on record, a spread of 7.5 points. See every year →
- First-attempt pass
- 93.5%
- Typical mileage
- 4k mi
The 2015 Smc Cg MOT pass rate is 93.9% of its MOT tests — 11.8 points ahead of what its age and mileage predict. Suspension is the biggest single reason it fails, at 51.3% of what testers record.
Expert verdict
Suspension: 2.4× the national share
Suspension accounts for 51.3% of everything recorded on the 2015 Smc Cg, against 21.0% nationally — 30.3 points above. Ask for the front and rear suspension to be checked on a ramp before you buy — worn bushes and broken springs are cheap to look at and expensive to discover at test time.
- 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 82.1% and this one manages 93.9% — 11.8 points ahead of what its age and mileage predict.
- Failures here tend to be cheap ones. 56% of the repairs this model fails on cost under £30 in parts. The pass rate matters less than what a bad afternoon at the test centre actually costs you.
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 Smc Cg? Get an email when these numbers change .
How does the 2015 Smc Cg compare?
Cars of this age and mileage average 82.1%, so this figure is 11.8 points ahead of what its age and mileage predict. On a first attempt, before any retests, the figure drops to 93.5%. The median 2015 Smc Cg in this dataset had covered 3,681 mi.
The single most recorded failure item is "Gradient tester (sp) efficiency below requirements", noted on 1.22% of tests.
- 82 recorded tests behind this page.
- 93.9% overall pass rate, 93.5% on a first attempt.
- Across every year of the Smc Cg, the average is 93.6% — best year 2014 (97.4%), worst 2016 (89.9%).
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
- 82
- Typical mileage (median)
- 3,681 mi
- Make and model
- Smc Cg
- Updated
- 2026-11-07
Source: DVSA anonymised MOT test data (2023–2025), OGL v3.0.
Top part to budget for
Brake Discs and Pads Set
Usually a DIY or independent-garage job.
Does mileage affect the Cg MOT pass rate?
Pass rate by odometer reading. Bar lengths start at 85% so small gaps stay visible.
Regional pass rates for the Cg
| Region | Tests | Pass rate |
|---|---|---|
| East of England | 23 | 87.0% |
| West Midlands | 16 | 100.0% |
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 2015 Cg
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 2015 Cg
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 horn 1.2% of tests
“horn not working”
Press it. That is the whole check, and a surprising number of cars fail on it.
-
Check the lights 1.2% of tests
“individual direction indicators likely to become detached”
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.
-
Check the number plates 1.2% of tests
“registration plates missing”
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.
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 2015 Cg through its MOT
Across the 9 items that are recorded most often on this model, the average repair comes to £17–£50 — and 56% of those repairs are parts that cost under £30.
- Average repair across the 9 common items
- £17–£50
- Cheapest common item: individual direction indicators likely to…
- £3–£12
- Dearest common item: gradient tester (sp) efficiency below…
- £45–£110
- Common items a careful owner can do at home
- 100%
- Repairs that still cost under £30
- 56%
Estimates from typical UK parts prices, weighted by how often each item appears in 82 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 Cg, side by side
3 model years on record, from 2014 to 2016. Across them the pass rate runs from 89.9% to 97.4% — a spread of 7.5 points. The bar under each year is the item that failed it most often.
- 2014 97.4% individual direction indicators…
- 2015 93.9%gradient tester (sp) efficiency…
- 2016 89.9% decelerometer (sp) efficiency…
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 2015 Smc Cg 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 2015 cars with a similar record
- Porsche Boxster 94.4%
- Porsche Cayman 94.7%
- Jaguar F-Type 92.9%
- Audi A8 92.7%
- Porsche 911 95.5%
- Bentley Continental 95.6%
Closest pass rates among 2015 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 2015 Smc Cg 9 failure items · 6 advisories · 6 inspection categories · mileage brackets · all of it in the page, none of it above the fold
Every inspection category
Shares of the 39 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 |
|---|---|---|---|---|
| Suspension | 20 | 51.30% | 20.98% | +30.32 |
| Brakes | 6 | 15.40% | 20.89% | −5.49 |
| Lamps, reflectors and electrical equipment | 5 | 12.80% | 12.21% | +0.59 |
| Tyres | 3 | 7.70% | 19.76% | −12.06 |
| Identification of the vehicle | 3 | 7.70% | 1.76% | +5.94 |
| Body, chassis, structure | 2 | 5.10% | 5.57% | −0.47 |
The exact failure items, in the tester's words
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Gradient tester (sp) efficiency below requirements Brakes | Major | 1.2% | £45–110 |
| Horn not working Lamps, reflectors and electrical equipment | Rectified | 1.2% | £8–25 |
| Individual direction indicators likely to become detached Lamps, reflectors and electrical equipment | Rectified | 1.2% | £3–12 |
| Individual direction indicators not working Lamps, reflectors and electrical equipment | Major | 1.2% | £3–12 |
| Position lamp not working Lamps, reflectors and electrical equipment | Rectified | 1.2% | £5–25 |
| Registration plates missing Identification of the vehicle | Major | 1.2% | £20–80 |
| Registration plates missing Identification of the vehicle | Rectified | 1.2% | £20–80 |
| Stop lamp not working Lamps, reflectors and electrical equipment | Rectified | 1.2% | £3–12 |
| Tread depth below requirements of 1.6mm Tyres | Rectified | 1.2% | £45–95 |
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 |
|---|---|---|---|
| Pins and bushes pin or bush excessively worn Suspension | Advisory | 11.0% | £40–150 |
| Ball joint excessively worn Suspension | Advisory | 8.5% | £18–45 |
| Brake pads less than 1.5 mm thick Brakes | Advisory | 2.4% | £18–45 |
| Parking brake efficiency (trikes, quads and pre-68 vehicles) efficiency below requirements Brakes | Advisory | 2.4% | £25–80 |
| Wheel bearings rough when rotated Suspension | Advisory | 2.4% | £20–55 |
| Axle has excessive vertical movement between stub axle and axle beam Suspension | Advisory | 1.2% | £40–150 |
Pass rate by mileage
| Mileage | Tests | Pass rate | Median odometer |
|---|---|---|---|
| 0-30k | 72 | 93.1% | 5,716 mi |
Source: 82 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.
2015 Cg MOT questions
What is the MOT pass rate for a 2015 Smc Cg?
93.9% of the 82 2015 Smc Cg tests in this dataset passed, against a national average of 82.1% for cars first used in 2015. First-attempt pass rate: 93.5%.
What are the most common MOT failures on a 2015 Smc Cg?
The three most recorded items are gradient tester (sp) efficiency below requirements (1.22%), horn not working (1.22%), individual direction indicators likely to become detached (1.22%). Percentages are the share of tests on this vehicle that recorded the item.
Does mileage affect the 2015 Smc Cg MOT pass rate?
Yes. Cars under 30,000 miles passed 93.1% of the time, falling to 93.1% for those over 120,000 miles. The median 2015 Smc Cg in this dataset had covered 3,681 mi.