Ford Fiesta St-Line Edition Turbo: MOT pass rate and reliability data

The Ford Fiesta St-Line Edition Turbo passes its MOT first time more often than the average UK car, by 13.9 percentage points. These figures come from the DVSA's full year of anonymised MOT results, covering 10,949 individual Ford Fiesta St-Line Edition Turbo tests. Nothing here is an estimate or a survey.

The numbers

First-time pass rate90.6%
UK national average76.7%
Difference+13.9 points
Tests analysed10,949
Average mileage at test26,877 miles
Average year of manufacture2020
Reliability rank604 of 2,005 models

What this means if you are buying one

A 90.6% first-time pass rate means roughly 9 in every 100 Ford Fiesta St-Line Edition Turbos 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 Ford Fiesta St-Line Edition Turbo tested had covered 26,877 miles and was built around 2020.

What this means at salvage auction

Pass rate is a proxy for what a car costs to keep on the road. The Ford Fiesta St-Line Edition Turbo sits 13.9 points above the national average, ranked 604 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 Ford Fiesta St-Line Edition Turbo 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 Ford Fiesta St-Line Edition Turbos at UK salvage auction.

Most common MOT failures on a Ford Fiesta St-Line Edition Turbo

  1. Seat belt buckle missing, damaged or not functioning as intended, 0.3% of tests (1.74x the national rate for this defect)
  2. Lamp not securely attached, 0.3% of tests (1.69x the national rate for this defect)
  3. Tyre tread depth not in accordance with the requirements, 3.2% of tests
  4. A tyre seriously damaged, 1.9% of tests
  5. a brake lining or pad worn below 1.5mm, 1.6% of tests
  6. The aim of a headlamp is not within limits laid down in the requirements, 1% of tests
  7. Windscreen washers not working or not providing sufficient fluid to clear the windscreen, 0.8% of tests
  8. Engine MIL illuminated indicating a malfunction, 0.5% of tests
  9. A tyre cords visible or damaged, 0.4% of tests
  10. Wiper blade missing or obviously not clearing the windscreen, 0.4% of tests

From 10,945 DVSA-tracked Ford Fiesta St-Line Edition Turbo tests, 2024. DVSA testers marked 7.65% of these flagged Ford Fiesta St-Line Edition Turbo defects as "dangerous", meaning the tester judged the car unsafe to drive away, against 5.11% nationally.

Most common MOT advisories on a Ford Fiesta St-Line Edition Turbo

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 Ford Fiesta St-Line Edition Turbo before it actually fails on it.

  1. Brake fluid significantly below minimum mark, 0.2% of tests (2.34x the national rate for this advisory)
  2. A wheel badly distorted or wear between wheel and hub at spigot mounting, 2% of tests (1.86x the national rate for this advisory)
  3. Tyre tread depth not in accordance with the requirements, 23.4% of tests, also fails
  4. A tyre seriously damaged, 13.5% of tests, also fails
  5. a brake lining or pad worn below 1.5mm, 9.4% of tests, also fails
  6. Brake disc or drum excessively weakened, insecure or fractured, 5.2% of tests
  7. Brake disc or drum significantly and obviously worn, 1.9% of tests
  8. A shock absorber damaged to the extent that it does not function or showing signs of severe leakage, 0.9% of tests
  9. Number plate inscription missing or illegible, 0.7% of tests
  10. Exhaust system leaking or insecure, 0.5% of tests

From 10,945 DVSA-tracked Ford Fiesta St-Line Edition Turbo tests, 2024.

Ford Fiesta St-Line Edition Turbo pass rate by model year

From its 2020 to its 2021 model year, the Ford Fiesta St-Line Edition Turbo's first-time pass rate has risen 1.3 points, from 90.4% to 91.7%, the usual pattern: a newer model year is a younger car today, so it fails less. First-time pass rate for each Ford Fiesta St-Line Edition Turbo year:

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Ford Fiesta St-Line Edition Turbo MOT pass rate badge: 90.6%

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Ford Fiesta St-Line Edition Turbo most common MOT failure: Seat belt buckle missing, damaged or not functioning as intended (0.3% of tests)

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All 2,005 models ranked by MOT pass rate