CarCostCheck

AUDI A4 SPORT 35 TDI MHEV S-A (2021)

Running costs, common problems, and reliability data based on 51 real MOT tests in 2024.

MOT Pass Rate

84%

Total Tests (2024)

51

Avg Mileage

60,896 mi

Est. Annual Cost

£1,632

Is the 2021 AUDI A4 SPORT 35 TDI MHEV S-A reliable?

Good reliability. Occasional issues but generally solid. That's close to the national average of 82%. It falls below the AUDI brand average of 90%.

At 3 years old, 84% of AUDI A4 SPORT 35 TDI MHEV S-As from 2021 passed their MOT first time in 2024. That's based on 51 tests across the UK. The average mileage at this age is 60,896 miles.

How does the 2021 AUDI A4 SPORT 35 TDI MHEV S-A compare?

Rank among all 2021 cars3180th out of 3,373(top 94%)
Rank among all AUDI models908th out of 1,079(top 84%)
vs national average+2% (82% avg)
vs 2021 cars average-8% (92% avg)
vs AUDI average-6% (90% avg)

Mileage Analysis

The average 2021 AUDI A4 SPORT 35 TDI MHEV S-A has 60,896 miles on the clock, which is well above the expected 22,200 miles for a 3-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.

How much does a 2021 AUDI A4 SPORT 35 TDI MHEV S-A cost to run?

Fuel (Diesel, 1968cc)
£1,037
🏛️Road Tax
£190
🔧MOT Test
£55
🛠️Predicted Repairs
£350
Total per year£1,632
Per month£136/mo

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

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About the 2021 AUDI A4 SPORT 35 TDI MHEV S-A

The 2021 AUDI A4 SPORT 35 TDI MHEV S-A is a premium with a 1968cc diesel engine. 51 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. It sits in the bottom 94% of 2021 cars for MOT pass rates.

With an average of 60,896 miles at 3 years old, AUDI A4 SPORT 35 TDI MHEV S-A owners cover more miles than the average driver. High-mileage examples should be checked carefully for wear on suspension, brakes, and drivetrain components.

2021 AUDI A4 SPORT 35 TDI MHEV S-A Fuel Costs

The 1968cc 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).

What does it cost to own a 2021 AUDI A4 SPORT 35 TDI MHEV S-A?

Total estimated annual running cost is £1,632 136/month), broken down as £1037 fuel, £190 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 84% pass rate. Keeping on top of servicing will help avoid surprises.

Buying a Used 2021 AUDI A4 SPORT 35 TDI MHEV S-A

At 3 years old, this is still relatively fresh. You may find examples with remaining manufacturer warranty. Depreciation is slowing but hasn't bottomed out yet. Note: with only 51 tests in our data, these figures should be treated as indicative rather than definitive.

Alternatives to the 2021 AUDI A4 SPORT 35 TDI MHEV S-A

If reliability is your priority, there are 4 similar cars with a higher MOT pass rate. Here are comparable diesel cars with similar engines: