Smart (Mcc) Forfour: MOT pass rate and reliability data

The Smart (Mcc) Forfour passes its MOT first time more often than the average UK car, by 1.9 percentage points. These figures come from the DVSA's full year of anonymised MOT results, covering 22,828 individual Smart (Mcc) Forfour tests. Nothing here is an estimate or a survey.

The numbers

First-time pass rate78.6%
UK national average76.7%
Difference+1.9 points
Tests analysed22,828
Average mileage at test44,189 miles
Average year of manufacture2016
Reliability rank1,498 of 2,005 models

What this means if you are buying one

A 78.6% first-time pass rate means roughly 21 in every 100 Smart (Mcc) Forfours presented for MOT fail on the first attempt. That is better than average, so a well-kept example is a reasonably safe used buy. The average Smart (Mcc) Forfour tested had covered 44,189 miles and was built around 2016.

What this means at salvage auction

Pass rate is a proxy for what a car costs to keep on the road. The Smart (Mcc) Forfour sits 1.9 points above the national average, ranked 1,498 of 2,005 models. On one bought as repairable salvage, the mechanical side is less likely to spring surprises, so your repair estimate should hold up reasonably well.

Before you bid: run the lot through the analyzer, check the car's own record, check the mileage, decode the VIN, and if it carries a marker use the write-off value calculator. Or compare it against another model.

Looking at a specific Smart (Mcc) Forfour rather than the model in general? The free check covers its MOT and mileage history, and the full HPI report confirms the insurance write-off category, outstanding finance and whether it is recorded stolen, from licensed data for 5 credits. Already own one that has been damaged? Work out whether fixing it beats selling it with the repair or scrap calculator, and see recorded closing bids for damaged Smart (Mcc) Forfours at UK salvage auction.

Most common MOT failures on a Smart (Mcc) Forfour

  1. Lambda coefficient outside the default limits or the range specified by the manufacturer, 2.6% of tests (5.04x the national rate for this defect)
  2. Tyre tread depth not in accordance with the requirements, 4.8% of tests (1.52x the national rate for this defect)
  3. Wiper blade missing or obviously not clearing the windscreen, 2.7% of tests (1.4x the national rate for this defect)
  4. Stop lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, 1.8% of tests (1.34x the national rate for this defect)
  5. Brake disc or drum significantly and obviously worn, 1.1% of tests (1.33x the national rate for this defect)
  6. A tyre cords visible or damaged, 2.1% of tests (1.24x the national rate for this defect)
  7. Exhaust system leaking or insecure, 1.2% of tests (1.19x the national rate for this defect)
  8. A suspension pin, bush or joint excessively worn, 5% of tests
  9. A tyre seriously damaged, 2.7% of tests
  10. a brake lining or pad worn below 1.5mm, 2% of tests

From 22,811 DVSA-tracked Smart (Mcc) Forfour tests, 2024. DVSA testers marked 7.36% of these flagged Smart (Mcc) Forfour defects as "dangerous", meaning the tester judged the car unsafe to drive away, against 5.11% nationally.

Most common MOT advisories on a Smart (Mcc) Forfour

An advisory doesn't fail the car - the tester flags it as worth watching, but it still passes. A different list from the failures above: what testers are noting on a Smart (Mcc) Forfour before it actually fails on it.

  1. Brake disc or drum significantly and obviously worn, 5.2% of tests (1.63x the national rate for this advisory), also fails
  2. A tyre seriously damaged, 18.8% of tests (1.22x the national rate for this advisory), also fails
  3. Tyre tread depth not in accordance with the requirements, 30.7% of tests, also fails
  4. Brake disc or drum excessively weakened, insecure or fractured, 13.3% of tests
  5. a brake lining or pad worn below 1.5mm, 6.6% of tests, also fails
  6. A suspension pin, bush or joint excessively worn, 6.5% of tests, also fails
  7. Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road users, 1.9% of tests
  8. Number plate inscription missing or illegible, 1.6% of tests
  9. Exhaust system leaking or insecure, 1.6% of tests, also fails
  10. A spring or spring component fractured or seriously weakened, 1.5% of tests

From 22,811 DVSA-tracked Smart (Mcc) Forfour tests, 2024.

Smart (Mcc) Forfour pass rate by model year

From its 2005 to its 2019 model year, the Smart (Mcc) Forfour's first-time pass rate has risen 17.1 points, from 68.4% to 85.5%, the usual pattern: a newer model year is a younger car today, so it fails less. First-time pass rate for each Smart (Mcc) Forfour year:

Smart (Mcc) Forfour by fuel type

The Smart (Mcc) Forfour's two most-tested fuel types split by 5.7 points: petrol passes first time 79.1% of the time (22,112 tests) against 84.8% for electric (381 tests).

Other Smart (Mcc) models

Models with a similar pass rate

If this car is a salvage or write-off

Embed this data

Run a site about the Smart (Mcc) Forfour? Embed the real DVSA pass-rate badge free, linked back to this page.

Smart (Mcc) Forfour MOT pass rate badge: 78.6%

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Smart (Mcc) Forfour most common MOT failure: Lambda coefficient outside the default limits or the range specified by the manufacturer (2.6% of tests)

<a href="https://www.salvageprophet.co.uk/mot/smart-mcc-forfour"><img src="https://www.salvageprophet.co.uk/badge/failure/smart-mcc-forfour.svg" width="340" height="106" alt="Smart (Mcc) Forfour most common MOT failure: Lambda coefficient outside the default limits or the range specified by the manufacturer (2.6% of tests) - Salvage Prophet"></a>

All 2,005 models ranked by MOT pass rate