Should I check the MOT history before buying a 2015 Mazda 6?

Yes. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. A full MOT history analysis will highlight patterns that a single test result won't reveal.

What corrosion should I look for when inspecting a 2015 Mazda 6?

Check brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that is expensive to fix and can fail an MOT.

How are tyres and brakes typically on a 2015 Mazda 6?

Tyres and brakes are the most common advisory items on vehicles of this age. Budget for replacement if they are near the limit, and factor this into your offer price.

How many 2015 Mazda 6 vehicles have had dangerous defects recorded?

37% of these vehicles have had a dangerous defect recorded. Search the registration on CarHunch — the full MOT history will show exactly what was flagged and whether it was resolved.

Is the 2015 Mazda 6 reliable?

Based on MOT data from 7,596 vehicles, the 2015 Mazda 6 has a first-time MOT pass rate of 84.9%, indicating generally reliable for its class. Always check the full MOT history of any specific vehicle before buying.

What are common problems with the 2015 Mazda 6?

The most frequently recorded MOT issues on the 2015 Mazda 6 are: Nearside Front Tyre worn close to legal limit/worn on edge (46.5% of vehicles), Offside Front Tyre worn close to legal limit/worn on edge (45.6% of vehicles), Front Brake pad(s) wearing thin (38.7% of vehicles). These figures are based on actual MOT test records — search a specific registration on CarHunch to see its individual history.

Do I need an HPI check when buying a 2015 Mazda 6?

Yes. The MOT history will not show outstanding finance, insurance write-offs, or stolen status. An HPI check covers these areas and should be part of any used car purchase.

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Mazda 6 (2015)

7,596 real MOT outcomes analysed • 84.9% first-time pass rate

2015 Mazda 6

CarHunch analysed 7,596 real MOT records for the 2015 Mazda 6. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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AI Analysis Reliability Overview Common Issues Check a Specific Reg Buyer's Checklist Pass Rate by Fuel Mileage Distribution Still on the Road MOT Averages Colour Breakdown Compare Models

The 2015 Mazda 6 passes its MOT at 84.9%, comfortably beating the UK average of 80%, which is a solid sign of reliability across the board. However, 37% of these vehicles have recorded at least one dangerous defect during their MOT history—well above the concerning threshold—so a pre-purchase inspection is essential and you should ask the seller for full MOT records.

At 70,956 miles median, these cars show typical mileage for their age, and the relatively low failure rate of 1.48 per vehicle suggests most issues are minor or caught as advisories (averaging 11.6). Check the last MOT report carefully for the nature of those advisories—particularly suspension and exhaust work—and budget for preventative maintenance as these components tend to accumulate wear.

The 2015 Mazda 6 has a decent first-time pass rate (84.9%), but a higher-than-average share of vehicles have had serious defects recorded — the individual vehicle's history matters a lot here.

⚠️ Over 1 in 5 of these vehicles have had a dangerous MOT failure at some point — usually tyres or brakes, and often a one-off issue rather than a persistent problem. The group stats won't tell you which one you're looking at.

First-time pass

84.9%

UK average ~80%

Around average

Dangerous (ever)

37%

At least once in MOT history

Check this vehicle

Avg failures / car

1.48

Over 8.8 tests on record

High

Typical mileage

71k

Middle half: 56k–89k

For context

🔧 Average reliability. Passes at roughly the UK rate — not a standout, not a problem vehicle. Individual history makes all the difference.

🔧 Expect consumable spend. An average of 11.6 advisories per vehicle tells you wear items (tyres, brakes) get flagged regularly. Budget for them — they're not surprises.

🔍 The dangerous defect figure is real. Most are one-off tyre failures or brake issues — not structural problems. But it's exactly why checking the individual vehicle's history is essential, not optional.

These stats describe 7,596 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.

Watch for defects — worth knowing

What tends to go wrong

Across 7,596 vehicles — figures show how many had each issue flagged at least once in their MOT history.

Tyre wear 46.5%

Nearside Front Tyre worn close to legal limit/worn on edge · Offside Front Tyre worn close to legal limit/worn on edge · Nearside Rear Tyre worn close to legal limit/worn on edge · …

Budget for a full set — on a vehicle this age, tyres are expected consumables. An inspection will confirm how much is left.

Brake wear 38.7%

Front Brake pad(s) wearing thin · Rear Brake pad(s) wearing thin · Rear Brake disc worn, pitted or scored, but not seriously weakened · …

Ask the seller when brakes were last serviced. If they don't know, factor in the cost.

Other issues 19.5%

Nearside Rear Child Seat fitted not allowing full inspection of adult belt · Rear Sub-frame corroded but not seriously weakened

Suspension & steering 14.5%

Nearside Front Suspension arm pin or bush worn but not resulting in excessive movement · Offside Front Suspension arm pin or bush worn but not resulting in excessive movement

Harder to spot without a ramp — this is a good reason to book a pre-purchase inspection.

Data covers a 3-year window centred on 2015.

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 7,596 Mazda 6 cars.

Before you buy a 2015 Mazda 6

Based on MOT data from 7,596 vehicles — here's what to check.

📋 Check the full MOT history. 37% 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.
🔍 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 →
📄 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 Get 20% off via CarHunch

Pass Rate by Fuel Type

Fuel type	Vehicles	Pass rate	Avg failures
Diesel (78%)	5,945	84.6%	1.5
Petrol (22%)	1,651	86%	1.42

Colour Breakdown

Based on 158,495 Mazda 6 vehicles registered in the UK — across all years. From DVLA registration records.

Silver 26%

41,132

Blue 25.2%

39,875

Grey 16.5%

26,179

Black 13.4%

21,188

Red 12.5%

19,888

White 5.4%

8,568

Green 0.8%

1,265

Yellow 0.2%

271

Maroon 0%

Gold 0%

Purple 0%

Brown 0%

Mileage Distribution

Most 2015 Mazda 6 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.

70,956

typical

55,771

low mileage

89,479

high mileage

Half of all 2015 Mazda 6 vehicles fall between 55,771 and 89,479 miles.

Is the mileage you're seeing normal?

✓ Under 55,771 miles — lower than most. Could be great, or could be a vehicle that rarely moved. Check test frequency and mileage progression in the MOT history.

✓ 55,771–89,479 miles — normal for age. This is where most 2015 Mazda 6s sit.

⚠ Over 120,796 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2015 Mazda 6 — Still on the Road

Most 2015 Mazda 6s are still being driven.

Strong survival — 5,972 vehicles still getting MOTs in 2025, 81% of the peak.

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2018–2025.
* The 2020 dip reflects the government's COVID-19 MOT exemption, which allowed certificates to be extended by six months — fewer tests were conducted that year.

MOT History Averages

8.8

Avg MOT tests per vehicle

1.48

Avg failures per vehicle

11.6

Avg advisories per vehicle

Other model years — Mazda 6: All 6 years → Which year to buy? →

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Compare with another model

See how the 2015 Mazda 6 stacks up against a rival.

Watch for defects — worth knowing