INFINITI Q50 (2017)
Running costs, reliability data, and common problems from 781 real MOT tests.
Annual Cost
£1,845
£154/month
MOT Pass Rate
88%
Good
Road Tax
£195
Flat rate/year
Insurance
Grp 25-38
2143cc Diesel
Solid Option
88% pass rate, £1845/year to run. 6 points above average.
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Annual Running Costs
~40 mpg
Flat rate (post-2017)
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 9 years old, 88% of INFINITI Q50s from 2017 passed their MOT first time in 2026. That's based on 781 tests across the UK. The average mileage at this age is 69,342 miles.
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How Does It Compare?
Mileage Analysis
69,342
Average miles
66,600
Expected for age
The average 2017 INFINITI Q50 has 69,342 miles on the clock, which is in line with the expected 66,600 miles for a 9-year-old car, suggesting normal everyday use.
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INFINITI Q50 by Year
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About the 2017 INFINITI Q50
The 2017 INFINITI Q50 is a premium with a 2143cc diesel engine. 781 of these vehicles were MOT tested in 2026, making it a less common model in the UK market. Among all cars from 2017, the average MOT pass rate is 87%, and this model beats that benchmark.
With an average of 69,342 miles at 9 years old, INFINITI Q50 owners drive about as much as the UK average.
2017 INFINITI Q50 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 2017 INFINITI Q50?
Total estimated annual running cost is £1,845 (£154/month), broken down as £1245 fuel, £195 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.
INFINITI Q50 Reliability Trend
Newer INFINITI Q50s show better MOT pass rates than older ones, with an average improvement of 4 percentage points.
Buying a Used 2017 INFINITI Q50
At 9 years old, this is a solid used buy if you find one with good service history. Depreciation has levelled off, so you won't lose much more value. Focus on condition over mileage.
Common Issues to Watch For
Based on the 2017 INFINITI Q50'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.
AdBlue System
Medium riskPost-2015 diesels use AdBlue for emissions. Sensor failures and tank heater issues are common. Budget £200-£500 for repairs.
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.
Suspension Wear
Medium riskShock absorbers, springs, and anti-roll bar links typically need attention around this age. Listen for clunks over bumps and check for uneven tyre wear.
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 2017 INFINITI Q50 stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| INFINITI Q50(2017) | 88% | £1245 | £195 | Grp 25-38 | £1845 |
| VOLKSWAGEN GOLF(2015) | 89% | £1037 | £135 | Grp 18-32 | £1577-£268 |
| FORD TRANSIT(2017) | 81% | £1037 | £190 | Grp 18-32 | £1632-£213 |
| FORD KUGA(2019) | 91% | £1037 | £190 | Grp 18-32 | £1482-£363 |
| KIA SPORTAGE(2016) | 85% | £1037 | £135 | Grp 18-32 | £1577-£268 |
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.
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