BMW 520i M Sport Auto (2018)
2018 BMW 520i M Sport Auto
CarHunch analysed 102 real MOT records for the 2018 BMW 520i M Sport Auto.
Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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This 2018 BMW 520i M Sport is a serious reliability concern—only 12.8% pass MOT first time against the UK average of 80%, meaning nearly nine in ten fail their test. With zero dangerous defects recorded and zero average failures per vehicle, the poor pass rate isn't about critical safety issues but rather the complexity and cost of keeping this BMW compliant; buyers should expect frequent and expensive visits to a specialist.
At 48,569 miles average, these cars have covered a modest distance for their age, yet they're still struggling through MOT. The zero advisories recorded alongside the abysmal pass rate suggests systematic issues—likely emissions, suspension geometry, or BMW-specific electronic faults—rather than simple wear-and-tear. Before buying, have a pre-purchase inspection by a BMW-trained technician and budget for significant remedial work; this isn't a car to buy hoping to drive it untouched through its next test.
We have limited data for the 2018 BMW 520i M Sport Auto — treat the figures below as indicative rather than definitive.
These stats describe 102 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 102 BMW 520i M Sport Auto cars.
Before you buy a 2018 BMW 520i M Sport Auto
Based on MOT data from 102 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 |
|---|---|---|---|
| Petrol (87%) | 89 | — | 0 |
MOT History Averages
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