Is the 2015 MG 6 reliable?

Average reliability. Expect some repairs as it ages. 77% of MG 6s from 2015 passed their MOT first time in 2026, based on 766 tests. That's 5 points below the national average of 82%.

How much does a 2015 MG 6 cost to run?

Estimated annual running cost is £1,857 (£155/month), including £1037 fuel, £265 road tax, £55 MOT, and £500 predicted repairs.

What is the MOT pass rate for a 2015 MG 6?

The 2015 MG 6 has a 77% MOT pass rate based on 766 tests in 2026. This ranks 496 out of 559 cars from 2015.

Which year MG 6 is most reliable?

The 2016 MG 6 has the highest MOT pass rate at 81%. The least reliable year is 2011 at 71%.

MG 6 (2015)

Q: What is the average mileage for a 2015 MG 6?

The average mileage for a 2015 MG 6 is 74,074 miles, which is in line with the expected 81,400 miles for a 11-year-old car, suggesting normal everyday use.

Running costs, reliability data, and common problems from 766 real MOT tests.

Annual Cost

£1,857

£155/month

MOT Pass Rate

77%

Average

Road Tax

£265

Based on CC/year

Insurance

Grp 18-32

1900cc Diesel

Check Carefully

77% pass rate, £1857/year to run. 5 points below average.

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Diesel1900cc11 years old766 tests74k miles avg

Annual Running Costs

Fuel (Diesel, 1900cc)

~48 mpg

£1,037

Road Tax

Based on 1900cc

£265

MOT Test

£55

Predicted Repairs

£500

Total per year£1,857

Per month£155/mo

Per week£36/wk

Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.

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Reliability Verdict

77% MOT pass rate(Average)

0%National avg: 82%100%

Average reliability. Expect some repairs as it ages. That's close to the national average of 82%. It falls below the MG brand average of 86%.

At 11 years old, 77% of MG 6s from 2015 passed their MOT first time in 2026. That's based on 766 tests across the UK. The average mileage at this age is 74,074 miles.

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How Does It Compare?

Rank among 2015 cars496th of 559(top 89%)

Rank among MG models124th of 155(top 80%)

vs national average-5%(82% avg)

vs 2015 cars average-6%(83% avg)

vs MG average-9%(86% avg)

Mileage Analysis

74,074

Average miles

81,400

Expected for age

The average 2015 MG 6 has 74,074 miles on the clock, which is in line with the expected 81,400 miles for a 11-year-old car, suggesting normal everyday use.

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Best Year to Buy?

The most reliable year is the 2016 model with a 81% MOT pass rate, while the 2011 model has the lowest at 71%. The 2015 sits between the two at 77%.

MG 6 by Year

Year	Pass Rate	Tests	Avg Mileage
2016	81%	562	63,832 mi
2015	77%	766	74,074 mi
2014	73%	706	67,854 mi
2013	72%	400	77,109 mi
2012	71%	808	79,453 mi
2011	71%	284	76,841 mi

Similar Cars to Consider

VOLKSWAGEN GOLF

2017 · 1598cc Diesel

£1,350/year

91%

+14%

VAUXHALL ASTRA

2013 · 1700cc Diesel

£1,727/year

79%

+2%

MERCEDES A-CLASS

2017 · 1461cc Diesel

£1,500/year

88%

+11%

AUDI A3

2015 · 1598cc Diesel

£1,445/year

88%

+11%

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About the 2015 MG 6

The 2015 MG 6 is a family car with a 1900cc diesel engine. 766 of these vehicles were MOT tested in 2026, making it a less common model in the UK market. It sits in the bottom 89% of 2015 cars for MOT pass rates.

With an average of 74,074 miles at 11 years old, MG 6 owners drive about as much as the UK average.

2015 MG 6 Fuel Costs

The 1900cc diesel engine offers a reasonable balance between performance and economy. Expect around 48 mpg in mixed driving, which works out to roughly £1,037 per year at current diesel prices of 148p per litre (based on 7,400 miles per year). Diesel cars of this age should have their DPF (diesel particulate filter) checked, as replacements can be costly.

What does it cost to own a 2015 MG 6?

Total estimated annual running cost is £1,857 (£155/month), broken down as £1037 fuel, £265 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 77% pass rate. Keeping on top of servicing will help avoid surprises.

MG 6 Reliability Trend

Newer MG 6s show better MOT pass rates than older ones, with an average improvement of 6 percentage points.

Buying a Used 2015 MG 6

At 11 years old, the MG 6 is firmly in budget territory. Purchase prices are low, but check for rust, worn suspension bushes, and electrical gremlins. A full service history is especially valuable at this age. If you're flexible on year, the 2016 model has the highest pass rate at 81%.

Common Issues to Watch For

Based on the 2015 MG 6's fuel type, age, and engine size, these are the most likely problem areas to check.

DPF (Diesel Particulate Filter)

Watch out

Short journeys clog the DPF. Replacement costs £1,000-£2,500. Check the DPF warning light and ask about driving patterns.

Turbo Wear

Watch out

Diesel turbos work harder and wear faster. Listen for whining noises and check for oil leaks around the turbo housing.

AdBlue System

Medium risk

Post-2015 diesels use AdBlue for emissions. Sensor failures and tank heater issues are common. Budget £200-£500 for repairs.

EGR Valve

Watch out

Exhaust Gas Recirculation valves clog with carbon deposits, causing rough running and poor economy. Cleaning costs £150-£300, replacement £300-£600.

Rust and Corrosion

Watch out

At 10+ years, check wheel arches, sills, subframe, and brake lines for rust. Structural corrosion is an MOT failure. Prevention is far cheaper than repair.

Suspension Bushings

Watch out

Rubber suspension bushes harden and crack with age, causing knocking noises and vague handling. A full refresh costs £300-£800 depending on the car.

Service History

Low risk

Always request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.

Running Costs Compared

How the 2015 MG 6 stacks up against similar cars for annual running costs, insurance, and tax.

Car	Pass Rate	Fuel/yr	Tax/yr	Insurance	Total/yr
MG 6(2015)	77%	£1037	£265	Grp 18-32	£1857
VOLKSWAGEN GOLF(2017)	91%	£905	£190	Grp 12-25	£1350-£507
VAUXHALL ASTRA(2013)	79%	£1037	£135	Grp 18-32	£1727-£130
MERCEDES A-CLASS(2017)	88%	£905	£190	Grp 12-25	£1500-£357
AUDI A3(2015)	88%	£905	£135	Grp 12-25	£1445-£412

Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.