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SM12 GNJ

2012 Mazda 3

Black Diesel 1560cc
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MOT Status

Valid
Expires3 Jan 2027
Tests17 (12 pass, 5 fail)
Pass rate70.6%

Mileage

127,847 mi
Last recorded127,847 miles
Recorded on15 Dec 2025
Typical for 2012 Mazda 361,274 mi

Significantly above average — investigate

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

RegistrationSM12 GNJ
MakeMazda
Model3
Year2012
ColourBlack
Fuel typeDiesel
Engine1,560cc

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

12 pass 5 fail
Pass 15 Dec 2025 127,847 miles

Front Brake disc worn, pitted or scored, but not seriously weakened and rear corroded (1.1.14 (a) (ii))

Front sub frame corroded

Nearside Rear Lower Suspension arm corroded but not seriously weakened (5.3.3 (b) (i))

Offside Rear Anti-roll bar linkage ball joint has slight play (5.3.4 (a) (i))

Offside Rear Lower Suspension arm corroded but not seriously weakened (5.3.3 (b) (i))

Rear sub frame corroded

Fail 5 Dec 2025 127,833 miles

Exhaust fumes entering cabin injector leak (6.1.2 (b) (i))

Nearside Front Suspension arm ball joint excessively worn (5.3.4 (a) (i))

Front Brake disc worn, pitted or scored, but not seriously weakened and rear corroded (1.1.14 (a) (ii))

Front sub frame corroded

Nearside Rear Lower Suspension arm corroded but not seriously weakened (5.3.3 (b) (i))

Offside Rear Anti-roll bar linkage ball joint has slight play (5.3.4 (a) (i))

Offside Rear Lower Suspension arm corroded but not seriously weakened (5.3.3 (b) (i))

Rear sub frame corroded

Pass 5 Dec 2024 127,782 miles

Brake disc worn, pitted or scored, but not seriously weakened Corrosion on front and rear brake discs (1.1.14 (a) (ii))

Exhaust heat shield damaged

Fuel filler pipes corroded

Nearside Registration plate lamp inoperative in the case of multiple lamps or light sources (4.7.1 (b) (i))

Slight corrosion on floor pan

Sub-frame corroded but not seriously weakened Front and rear (5.3.3 (b) (i))

Suspension arm corroded but not seriously weakened Front and rear, near side and off side (5.3.3 (b) (i))

Fail 5 Dec 2024 127,782 miles

Windscreen washer provides insufficient washer liquid (3.5 (a))

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

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

Brake disc worn, pitted or scored, but not seriously weakened Corrosion on front and rear brake discs (1.1.14 (a) (ii))

Exhaust heat shield damaged

Fuel filler pipes corroded

Nearside Registration plate lamp inoperative in the case of multiple lamps or light sources (4.7.1 (b) (i))

Slight corrosion on floor pan

Sub-frame corroded but not seriously weakened Front and rear (5.3.3 (b) (i))

Suspension arm corroded but not seriously weakened Front and rear, near side and off side (5.3.3 (b) (i))

Pass 4 Jan 2024 124,382 miles

Nearside Registration plate lamp inoperative in the case of multiple lamps or light sources (4.7.1 (b) (i))

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

Slight corrosion on floor pan

Suspension arm corroded but not seriously weakened Rear, Near side and off side (5.3.3 (b) (i))

Fail 4 Jan 2024 124,382 miles

Windscreen washer provides insufficient washer liquid (3.5 (a))

Nearside Registration plate lamp inoperative in the case of multiple lamps or light sources (4.7.1 (b) (i))

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

Slight corrosion on floor pan

Suspension arm corroded but not seriously weakened Rear, Near side and off side (5.3.3 (b) (i))

Pass 1 Nov 2022 121,485 miles

general corrosion to underside of vehicle

Fail 31 Oct 2022 121,485 miles

Driver's view of the road through the swept area of the windscreen significantly affected by an obstruction (3.1 (a) (ii))

Nearside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii))

Offside Front Anti-roll bar linkage ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii))

Offside Front Position lamp not working (4.2.1 (a) (ii))

Offside Registration plate lamp inoperative in the case of multiple lamps or light sources (4.7.1 (b) (i))

general corrosion to underside of vehicle

Pass 26 Oct 2021 119,808 miles

Items removed from driver's view prior to test ()

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

Offside Front Anti-roll bar linkage ball joint has slight play (5.3.4 (a) (i))

Offside Rear Anti-roll bar linkage ball joint has slight play (5.3.4 (a) (i))

Offside wiper blade deteriorating

general corrosion on underside

Pass 16 Oct 2020 116,058 miles

Nearside Rear Anti-roll bar pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))

Nearside Rear Coil spring mounting corroded but not seriously weakened (5.3.1 (b) (i))

Nearside Rear Suspension component pin or bush slightly worn (5.3.4 (a) (i))

Offside Front Tyre worn close to legal limit/worn on edge tyre tread depth approx (5.2.3 (e))

Offside Rear Anti-roll bar pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))

Offside Rear Coil spring mounting corroded but not seriously weakened (5.3.1 (b) (i))

Offside Rear Suspension component pin or bush slightly worn (5.3.4 (a) (i))

Rear Anti-roll bar corroded but not seriously weakened (5.3.3 (b) (i))

rear exhaust heat shield is insecure.

Fail 16 Oct 2020 116,058 miles

Nearside Front Headlamp aim too low (4.1.2 (a))

Nearside Rear Anti-roll bar pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))

Nearside Rear Coil spring mounting corroded but not seriously weakened (5.3.1 (b) (i))

Nearside Rear Suspension component pin or bush slightly worn (5.3.4 (a) (i))

Offside Front Headlamp aim too low (4.1.2 (a))

Offside Front Tyre worn close to legal limit/worn on edge tyre tread depth approx (5.2.3 (e))

Offside Rear Anti-roll bar pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))

Offside Rear Coil spring mounting corroded but not seriously weakened (5.3.1 (b) (i))

Offside Rear Suspension component pin or bush slightly worn (5.3.4 (a) (i))

Rear Anti-roll bar corroded but not seriously weakened (5.3.3 (b) (i))

rear exhaust heat shield is insecure.

Pass 28 Oct 2019 106,844 miles

Slight corrosion to front and rear chassis and suspension components

Pass 3 Jun 2019 100,737 miles

engine cover and undertrays obscuring some items

Pass 29 May 2018 86,500 miles

Nearside Rear Tyre slightly damaged/cracking or perishing tread wear eneven. (5.2.3 (d) (i))

Pass 16 Jun 2017 72,899 miles

Offside Front brake disc worn, pitted or scored, but not seriously weakened (3.5.1i)

Pass 17 Jun 2016 56,202 miles
Pass 22 Jun 2015 40,998 miles

How Reliable is the Mazda 3?

Based on 2,040,939 MOT tests across 164,053 vehicles.

77.5%
Pass Rate
6,292
Miles/Year
22
Year Lifespan
164,053
On UK Roads

Top MOT Failure Points

Tyre tread depth below requirements of 1.6mm 40,716
Brake pad(s) less than 1.5 mm thick 18,089
position lamp(s) not working 17,568
Suspension arm rubber bush deteriorated resulting in excessive movement 13,995
Windscreen wiper does not clear the windscreen effectively 11,940
Full Mazda 3 reliability report

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SM12 GNJ is a 2012 Mazda 3 in Black with a 1,560cc diesel engine. This vehicle has been through 17 MOT tests with a personal pass rate of 70.6%.

Across all 2012 Mazda 3 models, the average MOT pass rate is 80.6% with a typical mileage of 61,274 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 3 fails its MOT is tyre tread depth below requirements of 1.6mm, accounting for 40,716 recorded failures. If you're considering buying SM12 GNJ, it's worth having these areas checked by a mechanic before committing.

The Mazda 3 typically stays on UK roads for around 22 years. At 14 years old, this Mazda 3 is well into its expected lifespan but still has years ahead.

Frequently Asked Questions

How do I check the history of SM12 GNJ?

You can check the full history of SM12 GNJ by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was SM12 GNJ registered?

SM12 GNJ is a 2012 Mazda 3, first registered on 31 July 2012.

Is SM12 GNJ safe to buy?

The MOT history for SM12 GNJ shows 17 tests with a 70.6% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does SM12 GNJ 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 SM12 GNJ. 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.