MAZDA 6 (2018)
Running costs, common problems, and reliability data based on 5,151 real MOT tests in 2024.
MOT Pass Rate
89%
Total Tests (2024)
5,151
Avg Mileage
55,840 mi
Est. Annual Cost
£1,922
Is the 2018 MAZDA 6 reliable?
Good reliability. Occasional issues but generally solid. That's 7 points above the national average of 82%. It also outperforms the MAZDA brand average of 81%.
At 6 years old, 89% of MAZDA 6s from 2018 passed their MOT first time in 2024. That's based on 5,151 tests across the UK. The average mileage at this age is 55,840 miles.
How does the 2018 MAZDA 6 compare?
Mileage Analysis
The average 2018 MAZDA 6 has 55,840 miles on the clock, which is above the expected 44,400 miles for a 6-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.
Best year to buy a MAZDA 6?
The most reliable year is the 2020 model with a 94% MOT pass rate, while the 2002 model has the lowest at 54%. The 2018 sits between the two at 89%.
How much does a 2018 MAZDA 6 cost to run?
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
MAZDA 6 by Year
| Year | Pass Rate | Tests | Avg Mileage |
|---|---|---|---|
| 2021 | 93% | 118 | 26,540 mi |
| 2020 | 94% | 1,786 | 31,783 mi |
| 2019 | 91% | 7,381 | 44,030 mi |
| 2018 | 89% | 5,151 | 55,840 mi |
| 2017 | 87% | 7,764 | 68,812 mi |
| 2016 | 84% | 11,771 | 78,854 mi |
| 2015 | 82% | 11,898 | 88,374 mi |
| 2014 | 80% | 11,144 | 97,838 mi |
| 2013 | 80% | 7,682 | 103,079 mi |
| 2012 | 75% | 5,149 | 103,925 mi |
| 2011 | 74% | 7,535 | 117,021 mi |
| 2010 | 73% | 9,673 | 121,783 mi |
| 2009 | 73% | 7,396 | 124,353 mi |
| 2008 | 71% | 6,498 | 124,138 mi |
| 2007 | 68% | 4,401 | 109,611 mi |
| 2006 | 69% | 2,430 | 105,119 mi |
| 2005 | 64% | 1,596 | 100,805 mi |
| 2004 | 62% | 763 | 99,968 mi |
| 2003 | 63% | 356 | 98,803 mi |
| 2002 | 54% | 140 | 98,087 mi |
Checking a specific MAZDA 6?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2018 MAZDA 6
The 2018 MAZDA 6 is a family car with a 1998cc petrol engine. 5,151 of these vehicles were MOT tested in 2024, making it a reasonably common sight on UK roads. Among all cars from 2018, the average MOT pass rate is 89%, and this model falls short of that benchmark.
With an average of 55,840 miles at 6 years old, MAZDA 6 owners cover more miles than the average driver.
2018 MAZDA 6 Fuel Costs
The 1998cc petrol engine offers a reasonable balance between performance and economy. Expect around 36 mpg in mixed driving, which works out to roughly £1,327 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2018 MAZDA 6?
Total estimated annual running cost is £1,922 (£160/month), broken down as £1327 fuel, £190 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 89% pass rate. Keeping on top of servicing will help avoid surprises.
MAZDA 6 Reliability Trend
Newer MAZDA 6s show better MOT pass rates than older ones, with an average improvement of 18 percentage points.
Buying a Used 2018 MAZDA 6
At 6 years old, the MAZDA 6 offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. If you're flexible on year, the 2020 model has the highest pass rate at 94%. With 5,151 MOT tests in our data, there's strong statistical confidence in these figures.
Alternatives to the 2018 MAZDA 6
If reliability is your priority, there are 3 similar cars with a higher MOT pass rate. Here are comparable petrol cars with similar engines:
- FORD FOCUS (2016) 87% pass rate (-2%) from 109,880 tests
- VOLKSWAGEN GOLF (2019) 92% pass rate (+3%) from 89,653 tests
- FORD KUGA (2018) 90% pass rate (+1%) from 67,605 tests
- MINI COOPER (2018) 92% pass rate (+3%) from 55,706 tests