2004 Mazda 6 · 1,735 MOT tests
2004 Mazda 6 reliability
2004 Mazda 6s fail 51.5% of first MOT tests, 20% more MOT fails than the average car its age and mileage, ranking 17 of 17 6 years (1,735 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Mazda 6s: 30%)
- 51.5%
- first-time fail rate (all Mazda 6s: 30%)
- fails than cars of the same age and mileage
- 20% more
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 18
- 95,670
- typical miles at its MOT, aged about 18
- MOT tests, 2022 to 2024
- 1,735
- MOT tests, 2022 to 2024
Year on year
2004 against the years either side
- 2003 cars: 16% more MOT fails than the average car its age (the 2004 car does worse)
- 2005 cars: 19% more MOT fails than the average car its age (the 2004 car does worse)
- Weak spot: seat belts and airbags, 7.8% of tests fail here (172% above cars of the same age and mileage).
- Strong point: steering, 62% fewer fails than comparable cars.
- Plates: a 2004 car carries a 53 plate (January–February 2004), or a 04 plate (March–August 2004), or a 54 plate (September–December 2004).
Common problems
What fails on a 2004 Mazda 6
Fail rate by area
- Suspension26%
- Lights and electrics22.1%
- Brakes18.9%
- Body, chassis and structure11.6%
- Tyres8.5%
- Seat belts and airbags7.8%
- Windscreen, wipers and mirrors6.8%
Average for cars of the same age and mileage
Top failures
Suspension mounting area seriously corroded 11.99%
Corrosion near suspension mountings can seriously weaken the body structure, so an expert inspection is needed.
Position lamp not working 7.15%
A failed position lamp makes the car harder to see in poor light and is illegal, so it must be repaired.
Parking brake efficiency below minimum 5.07%
The parking brake holds the car less well than required, so it may roll on a slope and needs repair.
Seat belt anchor area weakened 4.55%
Corrosion near a seat belt anchor can weaken the body and make the belt fail, so expert repair is needed.
Wiper blade not clearing windscreen 3.8%
Wipers that do not clear the windscreen reduce visibility in rain, which is a safety risk, so replace them.
Brake pads worn below 1.5mm 3.57%
Pads worn below 1.5mm lose stopping power and can damage discs, so replacement is needed before the car is driven.
Common advisories
Tyre worn close to legal limit (14.99%) · Sub-frame showing corrosion (10.95%) · Tyre slightly damaged or cracking (10.49%) · Suspension arm showing corrosion (9.57%) · Brake disc pitted or scored (9.28%) · Brake pads wearing thin (9.16%)
Other years
Every Mazda 6 year
The full picture: Mazda 6 reliability. Before you pay for any Mazda 6, a Full Check (£9.99) shows finance, stolen and write-off records the MOT can't.
Source: DVSA anonymised MOT results, 2022 to 2024, class 4 normal tests.
Is a 2004 Mazda 6 reliable?
2004 Mazda 6s fail 51.5% of first MOT tests, 20% more MOT fails than the average car its age and mileage, ranking 17 of 17 6 years (1,735 DVSA tests, 2022 to 2024).
What fails on a 2004 Mazda 6 MOT?
Most often suspension mounting area seriously corroded (11.99% of tests), position lamp not working (7.15% of tests), parking brake efficiency below minimum (5.07% of tests).
How many miles should a 2004 Mazda 6 have done?
At its MOT aged about 18, a typical 2004 Mazda 6 shows 95,670 miles. Much higher or lower is worth asking about.
What plate is a 2004 car?
A car first registered in 2004 carries a 53 plate (January–February 2004), or a 04 plate (March–August 2004), or a 54 plate (September–December 2004).
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