AUDI Q3 (2018)
Running costs, reliability data, and common problems from 23,734 real MOT tests.
Annual Cost
£1,587
£132/month
MOT Pass Rate
91%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 8-20
1400cc Petrol
Great Choice
91% pass rate, £1587/year to run. 9 points above average.
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Annual Running Costs
~42 mpg
Flat rate (post-2017)
Low estimate due to excellent reliability
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
Excellent reliability. Very few MOT failures. That's 9 points above the national average of 82%.
At 8 years old, 91% of AUDI Q3s from 2018 passed their MOT first time in 2026. That's based on 23,734 tests across the UK. The average mileage at this age is 47,374 miles.
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How Does It Compare?
Mileage Analysis
47,374
Average miles
59,200
Expected for age
The average 2018 AUDI Q3 has 47,374 miles on the clock, which is in line with the expected 59,200 miles for a 8-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 94% MOT pass rate, while the 2011 model has the lowest at 81%. The 2018 sits between the two at 91%.
AUDI Q3 by Year
Similar Cars to Consider
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About the 2018 AUDI Q3
The 2018 AUDI Q3 is a premium with a 1400cc petrol engine. 23,734 of these vehicles were MOT tested in 2026, making it one of the most commonly tested cars on UK roads. Among all cars from 2018, the average MOT pass rate is 89%, and this model beats that benchmark.
With an average of 47,374 miles at 8 years old, AUDI Q3 owners drive about as much as the UK average.
2018 AUDI Q3 Fuel Costs
The 1400cc petrol engine offers a reasonable balance between performance and economy. Expect around 42 mpg in mixed driving, which works out to roughly £1,137 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 AUDI Q3?
Total estimated annual running cost is £1,587 (£132/month), broken down as £1137 fuel, £195 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 91% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
AUDI Q3 Reliability Trend
Newer AUDI Q3s show better MOT pass rates than older ones, with an average improvement of 7 percentage points.
Buying a Used 2018 AUDI Q3
At 8 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. If you're flexible on year, the 2020 model has the highest pass rate at 94%. With 23,734 MOT tests in our data, there's strong statistical confidence in these figures.
Common Issues to Watch For
Based on the 2018 AUDI Q3's fuel type, age, and engine size, these are the most likely problem areas to check.
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 2018 AUDI Q3 stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| AUDI Q3(2018) | 91% | £1137 | £195 | Grp 8-20 | £1587 |
| FORD FIESTA(2016) | 81% | £955 | £30 | Grp 1-8 | £1390-£197 |
| VAUXHALL CORSA(2016) | 81% | £1137 | £30 | Grp 8-20 | £1572-£15 |
| FORD FOCUS(2016) | 87% | £1137 | £135 | Grp 12-25 | £1677+£90 |
| NISSAN QASHQAI(2017) | 86% | £955 | £190 | Grp 5-15 | £1550-£37 |
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 Audi Models
Explore other Audi cars or similar models in the same category.
AUDI A3
2015 · 1598cc Diesel
AUDI A1
2016 · 1395cc Petrol
AUDI A4
2017 · 1968cc Diesel
FORD FIESTA
2016 · 998cc Petrol
VAUXHALL CORSA
2016 · 1398cc Petrol
FORD FOCUS
2016 · 1596cc Petrol
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