MERCEDES GLA (2014)
Running costs, reliability data, and common problems from 7,894 real MOT tests.
Annual Cost
£2,045
£170/month
MOT Pass Rate
88%
Good
Road Tax
£395
Based on CC/year
Insurance
Grp 25-38
2143cc Diesel
Solid Option
88% pass rate, £2045/year to run. 6 points above average.
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Annual Running Costs
~40 mpg
Based on 2143cc
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
Good reliability. Occasional issues but generally solid. That's 6 points above the national average of 82%.
At 12 years old, 88% of MERCEDES GLAs from 2014 passed their MOT first time in 2026. That's based on 7,894 tests across the UK. The average mileage at this age is 75,803 miles.
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How Does It Compare?
Mileage Analysis
75,803
Average miles
88,800
Expected for age
The average 2014 MERCEDES GLA has 75,803 miles on the clock, which is in line with the expected 88,800 miles for a 12-year-old car, suggesting normal everyday use.
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Best Year to Buy?
The most reliable year is the 2020 model with a 92% MOT pass rate, while the 2015 model has the lowest at 87%. The 2014 sits between the two at 88%.
MERCEDES GLA by Year
Similar Cars to Consider
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About the 2014 MERCEDES GLA
The 2014 MERCEDES GLA is a family car with a 2143cc diesel engine. 7,894 of these vehicles were MOT tested in 2026, making it a reasonably common sight on UK roads. Among all cars from 2014, the average MOT pass rate is 81%, and this model beats that benchmark.
With an average of 75,803 miles at 12 years old, MERCEDES GLA owners drive about as much as the UK average.
2014 MERCEDES GLA Fuel Costs
The 2143cc diesel engine offers a reasonable balance between performance and economy. Expect around 40 mpg in mixed driving, which works out to roughly £1,245 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 2014 MERCEDES GLA?
Total estimated annual running cost is £2,045 (£170/month), broken down as £1245 fuel, £395 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 88% pass rate. Keeping on top of servicing will help avoid surprises.
MERCEDES GLA Reliability Trend
The MERCEDES GLA has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.
Buying a Used 2014 MERCEDES GLA
At 12 years old, the MERCEDES GLA 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 2020 model has the highest pass rate at 92%. With 7,894 MOT tests in our data, there's strong statistical confidence in these figures.
Common Issues to Watch For
Based on the 2014 MERCEDES GLA's fuel type, age, and engine size, these are the most likely problem areas to check.
DPF (Diesel Particulate Filter)
Watch outShort journeys clog the DPF. Replacement costs £1,000-£2,500. Check the DPF warning light and ask about driving patterns.
Turbo Wear
Watch outDiesel turbos work harder and wear faster. Listen for whining noises and check for oil leaks around the turbo housing.
EGR Valve
Watch outExhaust Gas Recirculation valves clog with carbon deposits, causing rough running and poor economy. Cleaning costs £150-£300, replacement £300-£600.
Dual Mass Flywheel
Watch outLarger diesel engines put extra strain on the dual mass flywheel. Listen for rattling at idle. Replacement with clutch is £800-£1,500.
Rust and Corrosion
Watch outAt 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 outRubber 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 riskAlways 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 2014 MERCEDES GLA stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| MERCEDES GLA(2014) | 88% | £1245 | £395 | Grp 25-38 | £2045 |
| VOLKSWAGEN GOLF(2015) | 89% | £1037 | £135 | Grp 18-32 | £1577-£468 |
| VAUXHALL ASTRA(2013) | 79% | £1037 | £135 | Grp 18-32 | £1727-£318 |
| FORD TRANSIT(2016) | 80% | £1245 | £250 | Grp 25-38 | £1900-£145 |
| BMW 3 SERIES(2013) | 85% | £1037 | £135 | Grp 18-32 | £1577-£468 |
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.
Related Mercedes Models
Explore other Mercedes cars or similar models in the same category.
MERCEDES A
2019 · 1461cc Diesel
MERCEDES C
2017 · 1991cc Hybrid
MERCEDES A-CLASS
2017 · 1461cc Diesel
VOLKSWAGEN GOLF
2015 · 1968cc Diesel
VAUXHALL ASTRA
2013 · 1700cc Diesel
FORD TRANSIT
2016 · 2198cc Diesel
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