2020 Audi A3 — Full Specifications
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The 2020 Audi A3 is a saloon/sedan powered by a 2L 4-cyl turbo regular gasoline engine. Its most fuel-efficient configuration returns around 36 mpg (UK) / 30 mpg (US EPA) combined, with 30–36 mpg (UK) across all configurations. Owners often keep a Audi A3 workshop manual to hand for servicing and repairs.
Compared with the 2019 Audi A3: Fuel economy is essentially unchanged at around 36 mpg (UK) combined. The engine line-up listed by EPA is unchanged. It holds a 5★ overall NHTSA rating (none is on record for the 2019 model). EPA passenger volume changes from 79 to 86 cu ft.
Full Specifications
| Engine | 2L 4-cyl turbo |
|---|---|
| Transmission | Automatic (AM-S7) |
| Fuel Type | Regular Gasoline |
| Powertrain | Conventional |
| Drive | Front-Wheel Drive |
| Body Style | Saloon/Sedan |
| Passenger Volume (EPA) | 86 cu ft (2,435 L) |
| Luggage Volume (EPA) | 10 cu ft (283 L) |
| Fuel Economy (UK) | 36 combined / 32 urban / 43 extra-urban mpg |
| Fuel Economy (US EPA) | 30 combined / 27 city / 36 highway mpg |
| CO₂ Emissions | 182 g/km |
| EPA Greenhouse Gas Score | 5 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $2,250 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 2 configurations for the 2020 Audi A3, all with the 2L 4-cyl turbo engine. Combined fuel economy ranges from 25 to 30 mpg (US), or 30 to 36 mpg (UK), depending on engine, transmission and drive. The headline figures at the top of this page describe the most fuel-efficient configuration.
| Engine | Transmission | Drive | MPG (UK) | MPG (US) | CO₂ g/km | Fuel cost / yr |
|---|---|---|---|---|---|---|
| 2L 4-cyl turbo | Automatic (AM-S7) | All-Wheel Drive | 30 | 25 (22/30) | 223 | $2,700 |
| 2L 4-cyl turbo | Automatic (AM-S7) | Front-Wheel Drive | 36 | 30 (27/36) | 182 | $2,250 |
MPG (US) shows combined, with city/highway in brackets. Highlighted row = the configuration used for the headline figures. Source: US EPA fueleconomy.gov.
EPA measures interior passenger volume at 86 cubic feet (about 2,435 litres) and luggage volume at 10 cubic feet (about 283 litres). These are US EPA interior-volume figures; they are measured differently from the boot capacity numbers UK manufacturers quote.
Owner Essentials for the 2020 Audi A3
Running Costs: 2020 Audi A3
Covering around 8,000 miles a year in a 2020 Audi A3 at 36 mpg combined, expect roughly 1,010 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $2,250 a year in fuel for the most efficient configuration (15,000 miles, national average prices). Work out exact fuel costs with the fuel cost calculator on 247Calculators.
Convert between MPG and L/100km with the unit converters on 247QuickTools. Not sure what tyre size fits? 247TyreCheck explains tyre sizing.
Only need this car occasionally? See our buy vs rent comparison.
2020 Audi A3 Safety Ratings (NHTSA)
Recalls & Owner Complaints (NHTSA)
NHTSA lists 3 safety recall campaigns that include the 2020 Audi A3 (as of 6 October 2026). Most affected areas: Fuel system (1), Tires (1), Air bags (1). A campaign often covers several model years or models, so check your own VIN to see whether your car is affected.
- Fuel system — campaign 24V110000, reported 14 February 2024. Risk: A fuel leak in the presence of an ignition source increases the risk of a fire.
- Tires — campaign 22V815000, reported 31 October 2022. Risk: An undetected sudden loss of pressure in all four tires increases the risk of a crash.
- Air bags — campaign 21V198000, reported 22 March 2021. Risk: A deactivated passenger air bag increases the risk of injury during a crash.
Owners have filed 17 complaints with NHTSA about the 2020 Audi A3. The most-reported areas are Air bags (9), Power train (2), Unspecified (2). Complaints include 1 reported crash. That is close to the median of 20 complaints across the 15 Audi A3 model years in our data.
Used-buyer checklist for the 2020 Audi A3
Based on where NHTSA recalls and owner complaints cluster for this model year, these are the areas worth checking before you buy:
- Air bags (1 recall campaign · 9 owner complaints) — Confirm any air bag inflator or module recalls were completed — enter the VIN at nhtsa.gov/recalls.
- Fuel system (1 recall campaign) — Ask whether any fuel-pump or fuel-system recalls were completed, and watch for hard starting or stalling.
- Tyres (1 recall campaign) — Check tyre age and wear and ask about any tyre recalls.
- Transmission & drivetrain (2 owner complaints) — On the test drive, watch for hesitation, jerking or slipping between gears and ask for transmission service history.
Source: US NHTSA recall and consumer-complaint databases, retrieved 6 October 2026. Complaints are unverified owner reports, not confirmed defects. Check any vehicle by VIN at nhtsa.gov/recalls, and see our guide to checking a used car for recalls.
How It Compares
Audi models in our database average about 27 mpg (UK) combined on their most efficient configuration; the 2020 Audi A3's 36 mpg is 9 mpg above that make average. Its 182 g/km CO₂ figure is 69 g/km lower than the 251 g/km Audi average.
Of the 15 Audi A3 model years we cover, the 2020 ranks 9th for combined fuel economy on its best configuration (36 mpg UK combined, against a high of 42 mpg). See every Audi A3 year side by side.
Last updated: · Data: US EPA (fueleconomy.gov) and NHTSA safety ratings 18 July 2026; NHTSA recalls and complaints 6 October 2026; Wikidata & curated EU catalogue 18 July 2026; European generation and engine data from Wikipedia 7 October 2026
Vehicle data sourced from manufacturer specifications. Always verify with your vehicle handbook or a qualified mechanic. This is a reference tool, not professional advice.
Recommended Accessories for the 2020 Audi A3
Frequently Asked Questions
What engine does the 2020 Audi A3 have?
It's fitted with a 2L 4-cyl turbo regular gasoline engine, paired with a automatic (am-s7) transmission.
What is the fuel economy of the 2020 Audi A3?
The most efficient configuration returns around 36 mpg (UK) combined, or 30 mpg on the US EPA cycle. Across all configurations the UK combined figure runs from 30 to 36 mpg.
How much does the 2020 Audi A3 cost to fuel per year?
The US EPA estimates about $2,250 a year in fuel for the most efficient configuration, based on 15,000 miles of mixed driving and national average fuel prices. Your own cost will depend on mileage and local prices.
Does the 2020 Audi A3 have a good safety rating?
It holds an overall NHTSA rating of 5 stars, with 4 stars for frontal crash protection.
Does the 2020 Audi A3 have any recalls?
NHTSA lists 3 safety recall campaigns that include the 2020 Audi A3 (as of 6 October 2026). Most affected areas: Fuel system (1), Tires (1), Air bags (1). A campaign often covers several model years or models, so check your own VIN to see whether your car is affected.
What are the most common problems reported for the 2020 Audi A3?
Among the 17 owner complaints filed with NHTSA, the most-reported areas are Air bags (9 complaints), Power train (2 complaints), Unspecified (2 complaints). Complaints are unverified owner reports, not confirmed defects, and raw counts rise with how many cars were sold.
How much interior and luggage space does the 2020 Audi A3 have?
EPA measures interior passenger volume at 86 cubic feet (about 2,435 litres) and luggage volume at 10 cubic feet (about 283 litres). These are US EPA interior-volume figures, which are measured differently from the UK boot-capacity numbers manufacturers quote.