AUDI A4 S LINE 35 TFSI MHEV (2020)
Running costs, reliability data, and common problems from 60 real MOT tests.
Annual Cost
£2,077
£173/month
MOT Pass Rate
78%
Average
Road Tax
£195
Flat rate/year
Insurance
Grp 18-32
1984cc Petrol
Check Carefully
78% pass rate, £2077/year to run. Close to the national average.
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Annual Running Costs
~36 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
Average reliability. Expect some repairs as it ages. That's close to the national average of 82%. It falls below the AUDI brand average of 90%.
At 6 years old, 78% of AUDI A4 S LINE 35 TFSI MHEVs from 2020 passed their MOT first time in 2026. That's based on 60 tests across the UK. The average mileage at this age is 31,690 miles.
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How Does It Compare?
Mileage Analysis
31,690
Average miles
44,400
Expected for age
The average 2020 AUDI A4 S LINE 35 TFSI MHEV has 31,690 miles on the clock, which is below the expected 44,400 miles for a 6-year-old car. This suggests lighter use than average, which generally means less wear on major components.
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Best Year to Buy?
The most reliable year is the 2021 model with a 91% MOT pass rate, while the 2020 model has the lowest at 78%. Consider a different year if reliability is a priority.
AUDI A4 S LINE 35 TFSI MHEV by Year
Similar Cars to Consider
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About the 2020 AUDI A4 S LINE 35 TFSI MHEV
The 2020 AUDI A4 S LINE 35 TFSI MHEV is a premium with a 1984cc petrol engine. 60 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It sits in the bottom 99% of 2020 cars for MOT pass rates.
With an average of 31,690 miles at 6 years old, AUDI A4 S LINE 35 TFSI MHEV owners tend to use this car less than the typical driver.
2020 AUDI A4 S LINE 35 TFSI MHEV Fuel Costs
The 1984cc 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 2020 AUDI A4 S LINE 35 TFSI MHEV?
Total estimated annual running cost is £2,077 (£173/month), broken down as £1327 fuel, £195 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 78% pass rate. Keeping on top of servicing will help avoid surprises.
Buying a Used 2020 AUDI A4 S LINE 35 TFSI MHEV
At 6 years old, the AUDI A4 S LINE 35 TFSI MHEV offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. Note: with only 60 tests in our data, these figures should be treated as indicative rather than definitive.
Common Issues to Watch For
Based on the 2020 AUDI A4 S LINE 35 TFSI MHEV's fuel type, age, and engine size, these are the most likely problem areas to check.
Timing Chain / Belt
Watch outAt 6 years old, check whether the timing belt has been replaced (typically due every 5-7 years or 60,000-100,000 miles). A snapped belt can destroy the engine.
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 2020 AUDI A4 S LINE 35 TFSI MHEV stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| AUDI A4 S LINE 35 TFSI MHEV(2020) | 78% | £1327 | £195 | Grp 18-32 | £2077 |
| VOLKSWAGEN GOLF(2019) | 92% | £1137 | £190 | Grp 12-25 | £1582-£495 |
| FORD KUGA(2018) | 90% | £1137 | £190 | Grp 12-25 | £1582-£495 |
| MINI COOPER(2018) | 92% | £1137 | £190 | Grp 12-25 | £1582-£495 |
| NISSAN QASHQAI(2020) | 93% | £1137 | £190 | Grp 12-25 | £1582-£495 |
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
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VOLKSWAGEN GOLF
2019 · 1498cc Petrol
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2018 · 1499cc Petrol
MINI COOPER
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