Ford Fiesta ST Line Turbo (2018)
2018 Ford Fiesta ST Line Turbo
CarHunch analysed 561 real MOT records for the 2018 Ford Fiesta ST Line Turbo.
Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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The 2018 Fiesta ST-Line Turbo is a significant reliability concern at MOT—only 51.2% pass first time against the UK average of 80%, and the fuel breakdown reveals a stark problem: petrol versions are nearly failing outright at 0.3% pass rate while the "Other" fuel category (likely mild hybrid or alternative powertrain variants) achieves 95.5%. No dangerous defects have been recorded in this cohort, which is a small mercy, but the petrol model's catastrophic first-time pass rate makes it a risky buy without detailed pre-purchase inspection. The median mileage of 43,074 miles is reasonable for a 2018, yet these cars are still accumulating failures—averaging 0.09 failures per vehicle—suggesting mechanical or emissions issues common to the petrol turbo engine rather than age-related wear. If you're considering a petrol ST-Line Turbo, get a full diagnostic on the turbocharger, fuel system, and emissions equipment before committing, and prioritise the non-petrol variants or look at a different model entirely.
The 2018 Ford Fiesta ST Line Turbo passes its MOT first time at roughly the UK average rate (82.1%) — solid but worth checking this vehicle's history carefully.
These stats describe 561 vehicles as a group. The specific vehicle you're looking at could be the one good example or the one outlier. Run its registration to find out.
See this vehicle's full MOT history & AI hunches
Spot recurring advisories, hidden issues, and how it compares to 561 Ford Fiesta ST Line Turbo cars.
Before you buy a 2018 Ford Fiesta ST Line Turbo
Based on MOT data from 561 vehicles — here's what to check.
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Check the full MOT history.
0% of these vehicles have had a dangerous defect recorded -
recurring advisories often signal problems years before they become failures.
Search the reg on CarHunch for the full MOT history, reliability stats and a free AI-powered analysis of that exact vehicle. -
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Brake pipes, sills and subframes are the key areas on a vehicle this age — structural rust is hard to spot without getting underneath. A mechanic will check all of this before you commit, and give you a concrete basis to negotiate on price.
Inspection
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Outstanding finance, insurance write-offs and clocking won't appear in the MOT records — a dedicated history check covers all of this. Our link gets you 20% off automatically.
History
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Other (53%) | 300 | 95.5% | 0.16 |
| Petrol (47%) | 261 | 66.7% | 0 |
Colour Breakdown
Based on 3,640 Ford Fiesta ST Line Turbo vehicles registered in the UK — across all years. From DVLA registration records.
Mileage Distribution
Most 2018 Ford Fiesta ST Line Turbo vehicles sit in the blue band. If the vehicle you're looking at is outside it, it's either unusually low or high mileage for its age.
Half of all 2018 Ford Fiesta ST Line Turbo vehicles fall between 32,078 and 53,761 miles.
2018 Ford Fiesta ST Line Turbo — Still on the Road
Numbers are thinning — 62% of 2018 Ford Fiesta ST Line Turbos are still active.
152 vehicles still getting MOTs in 2025 — 62% of the peak remain.
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2022–2025.
MOT History Averages
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Compare with another model
See how the 2018 Ford Fiesta ST Line Turbo stacks up against a rival.