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ST66 WCO

2017 Mazda 6

Red Diesel 2191cc
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MOT Status

Valid
Expires8 Apr 2027
Tests11 (8 pass, 3 fail)
Pass rate72.7%

Mileage

106,512 mi
Last recorded106,512 miles
Recorded on9 Apr 2026
Typical for 2017 Mazda 651,846 mi

Significantly above average — investigate

4 checks still locked for this Mazda
Stolen
Finance
Write-off
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Vehicle Details

RegistrationST66 WCO
MakeMazda
Model6
Year2017
ColourRed
Fuel typeDiesel
Engine2,191cc

All premium checks include

50+ data points
Finance Check (Experian) Insurance Write-off Salvage Auction Stolen Check Previous Owners Ex-Taxi, Police, NHS Mileage Anomaly Import / Export Scrapped Check Plate Changes

MOT History

8 pass 3 fail
Pass 9 Apr 2026 106,512 miles
Pass 19 Jan 2026 104,528 miles

Brake hose has slight corrosion to ferrule All hoses (1.1.12 (f) (i))

Nearside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Offside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Rear Sub-frame corroded but not seriously weakened (5.3.3 (b) (i))

Suspension arm corroded but not seriously weakened All arms at rear (5.3.3 (b) (i))

Fail 19 Jan 2026 104,522 miles

Nearside Rear Brake pipe excessively corroded (1.1.11 (c))

Offside Rear Brake pipe excessively corroded (1.1.11 (c))

Rear Inner Brake pad(s) less than 1.5 mm thick (1.1.13 (a) (ii)) DANGEROUS

Brake hose has slight corrosion to ferrule All hoses (1.1.12 (f) (i))

Nearside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Offside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Rear Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))

Rear Sub-frame corroded but not seriously weakened (5.3.3 (b) (i))

Suspension arm corroded but not seriously weakened All arms at rear (5.3.3 (b) (i))

Pass 9 Jan 2025 91,160 miles

Nearside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Nearside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))

Offside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Offside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Offside Rear Tyre has a cut but not deep enough to reach the ply or cords (5.2.3 (d) (i))

Rear Sub-frame corroded but not seriously weakened (5.3.3 (b) (i))

Pass 15 Jan 2024 80,063 miles

Nearside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Offside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Fail 15 Jan 2024 80,054 miles

Nearside Windscreen wiper does not clear the windscreen effectively (3.4 (b) (ii))

Rear Brake pad(s) less than 1.5 mm thick (1.1.13 (a) (ii)) DANGEROUS

Nearside Rear Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))

Nearside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Offside Rear Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))

Offside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Pass 23 Jan 2023 69,375 miles

Nearside Front Outer Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Nearside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Offside Front Outer Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Offside Rear Brake pipe corroded, covered in grease or other material (1.1.11 (c))

Pass 20 Jan 2022 57,201 miles
Pass 25 Jan 2021 42,455 miles

Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Fail 25 Jan 2021 42,451 miles

Nearside Front Tyre tread depth below requirements of 1.6mm (5.2.3 (e)) DANGEROUS

Offside Front Tyre tread depth below requirements of 1.6mm (5.2.3 (e)) DANGEROUS

Front Brake pad(s) wearing thin Pads. (1.1.13 (a) (ii))

Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Pass 28 Jan 2020 32,037 miles

Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))

How Reliable is the Mazda 6?

Based on 1,904,140 MOT tests across 159,651 vehicles.

75.4%
Pass Rate
7,713
Miles/Year
24
Year Lifespan
159,651
On UK Roads

Top MOT Failure Points

Tyre tread depth below requirements of 1.6mm 45,082
position lamp(s) not working 38,980
Brake pad(s) less than 1.5 mm thick 34,576
Registration plate lamp not working 29,515
Windscreen wiper does not clear the windscreen effectively 28,494
Full Mazda 6 reliability report

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ST66 WCO is a 2017 Mazda 6 in Red with a 2,191cc diesel engine. This vehicle has been through 11 MOT tests with a personal pass rate of 72.7%.

Across all 2017 Mazda 6 models, the average MOT pass rate is 86.0% with a typical mileage of 51,846 miles. This particular vehicle has a lower pass rate than the average for its year, which may indicate maintenance issues worth investigating.

The most common reason a Mazda 6 fails its MOT is tyre tread depth below requirements of 1.6mm, accounting for 45,082 recorded failures. If you're considering buying ST66 WCO, it's worth having these areas checked by a mechanic before committing.

The Mazda 6 typically stays on UK roads for around 24 years. At 9 years old, this Mazda 6 is still in the earlier part of its expected life.

Frequently Asked Questions

How do I check the history of ST66 WCO?

You can check the full history of ST66 WCO by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was ST66 WCO registered?

ST66 WCO is a 2017 Mazda 6, first registered on 31 January 2017.

Is ST66 WCO safe to buy?

The MOT history for ST66 WCO shows 11 tests with a 72.7% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does ST66 WCO have outstanding finance?

Finance checks require a premium vehicle report. This checks against all major UK finance providers to see if there is any outstanding finance on ST66 WCO. If you buy a car with outstanding finance, the finance company can repossess it.

No warranty or guarantee of accuracy is provided for any free data on this page. The data guarantee applies only to information obtained through the purchase of a full check.