Mazda 6 SE L Nav D (2016)
2016 Mazda 6 SE L Nav D
CarHunch analysed 184 real MOT records for the 2016 Mazda 6 SE L Nav D. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
This 2016 Mazda 6 diesel is a serious reliability concern: only 33.2% pass their MOT first time, nearly half the UK average of 80%, and no vehicles in this cohort have ever recorded a dangerous defect—but that's cold comfort when two-thirds fail on their first attempt. The diesel variant makes up virtually the entire sample and performs identically poorly at 32.5%, suggesting this is a fundamental issue with this engine rather than fuel-type variance.
At 77,740 miles median, these cars are showing their age predictably, yet the near-zero failures and advisories per vehicle (0.17 and 0.0 respectively) suggests the initial MOT failure is often a single systemic problem rather than cumulative decay. Before buying, insist on a pre-purchase inspection by a diesel specialist to identify whether the failure is emissions-related (DPF, EGR) or mechanical, as fixing the wrong thing will be expensive and frustrating.
What to check before buying a 2016 Mazda 6 SE L Nav D
Practical pre-purchase checks for this age and model.
- 📋 Check the full MOT history. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. Enter the reg below for a full AI analysis.
- 🔍 Inspect for corrosion in person. Brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that's expensive to fix and can fail an MOT.
- 🛞 Check tyres and brakes. The most common advisory items at this age. Budget for replacement if they're near the limit — factor this into your offer price.
- 📄 Run an HPI check. The MOT history won't show outstanding finance, insurance write-offs, or stolen status — an HPI check will.
Before you buy a Mazda 6 SE L Nav D
MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Diesel (99%) | 182 | 32.5% | 0.18 |
| Gas Bi-Fuel (1%) | 2 | 100% | 0 |
Mileage Distribution
Most 2016 Mazda 6 SE L Nav D vehicles sit in the blue band. If the car you're looking at is outside it, it's either unusually low or high mileage for its age.
Half of all 2016 Mazda 6 SE L Nav D vehicles fall between 60,935 and 92,814 miles.
2016 Mazda 6 SE L Nav D — Still on the Road
Strong survival — 50 vehicles still getting MOTs in 2025, 88% of the peak.
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2020–2025.
MOT History Averages
Found a specific Mazda 6 SE L Nav D?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.