2020 Infiniti Q50 — Full Specifications
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The 2020 Infiniti Q50 is a saloon/sedan powered by a 3L 6-cyl turbo premium gasoline engine. Its most fuel-efficient configuration returns around 28 mpg (UK) / 23 mpg (US EPA) combined, with 26–28 mpg (UK) across all configurations. Owners often keep a Infiniti Q50 workshop manual to hand for servicing and repairs.
Related 2020 listings: Infiniti Q50 Red Sport.
Compared with the 2019 Infiniti Q50: Fuel economy slips from 30 to 28 mpg (UK) combined on the most efficient configuration. No longer listed: 2L 4-cyl turbo. EPA passenger volume changes from 102 to 100 cu ft.
Full Specifications
| Engine | 3L 6-cyl turbo |
|---|---|
| Transmission | Automatic (S7) |
| Fuel Type | Premium Gasoline |
| Powertrain | Conventional |
| Drive | Rear-Wheel Drive |
| Body Style | Saloon/Sedan |
| Length | 4790 mm |
| Width | 1825 mm |
| Passenger Volume (EPA) | 100 cu ft (2,832 L) |
| Luggage Volume (EPA) | 14 cu ft (396 L) |
| Fuel Economy (UK) | 28 combined / 24 urban / 35 extra-urban mpg |
| Fuel Economy (US EPA) | 23 combined / 20 city / 29 highway mpg |
| CO₂ Emissions | 240 g/km |
| EPA Greenhouse Gas Score | 4 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $3,550 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 2 configurations for the 2020 Infiniti Q50, all with the 3L 6-cyl turbo engine. Combined fuel economy ranges from 22 to 23 mpg (US), or 26 to 28 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 |
|---|---|---|---|---|---|---|
| 3L 6-cyl turbo | Automatic (S7) | All-Wheel Drive | 26 | 22 (19/27) | 253 | $3,750 |
| 3L 6-cyl turbo | Automatic (S7) | Rear-Wheel Drive | 28 | 23 (20/29) | 240 | $3,550 |
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 100 cubic feet (about 2,832 litres) and luggage volume at 14 cubic feet (about 396 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 Infiniti Q50
Running Costs: 2020 Infiniti Q50
Covering around 8,000 miles a year in a 2020 Infiniti Q50 at 28 mpg combined, expect roughly 1,299 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $3,550 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 Infiniti Q50 Safety Ratings (NHTSA)
No NHTSA crash-test rating is on record for this model year. The NHTSA rates only a subset of vehicles each year; you can browse every rated vehicle on our NHTSA Safety Ratings hub.
Recalls & Owner Complaints (NHTSA)
NHTSA lists no safety recall campaigns for the 2020 Infiniti Q50 as of 6 October 2026. Recalls can be issued years after a model is sold, so it is still worth checking your own VIN.
Owners have filed 3 complaints with NHTSA about the 2020 Infiniti Q50. The most-reported areas are Power train (1), Engine (1), Unspecified (1). That is well below the median of 34 complaints across the 10 Infiniti Q50 model years in our data.
Used-buyer checklist for the 2020 Infiniti Q50
Based on where NHTSA recalls and owner complaints cluster for this model year, these are the areas worth checking before you buy:
- Transmission & drivetrain (1 owner complaint) — On the test drive, watch for hesitation, jerking or slipping between gears and ask for transmission service history.
- Engine (1 owner complaint) — Listen for unusual noise on a cold start, check for warning lights and ask for the service records.
- Brakes (1 owner complaint) — Brake firmly from speed and look for pulling, vibration or a soft pedal; ask for brake 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
Infiniti models in our database average about 26 mpg (UK) combined on their most efficient configuration; the 2020 Infiniti Q50's 28 mpg is 2 mpg above that make average. Its 240 g/km CO₂ figure is 23 g/km lower than the 263 g/km Infiniti average.
Of the 11 Infiniti Q50 model years we cover, the 2020 ranks 5th for combined fuel economy on its best configuration (28 mpg UK combined, against a high of 31 mpg). See every Infiniti Q50 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 Infiniti Q50
Frequently Asked Questions
What engine does the 2020 Infiniti Q50 have?
It's fitted with a 3L 6-cyl turbo premium gasoline engine, paired with a automatic (s7) transmission.
What is the fuel economy of the 2020 Infiniti Q50?
The most efficient configuration returns around 28 mpg (UK) combined, or 23 mpg on the US EPA cycle. Across all configurations the UK combined figure runs from 26 to 28 mpg.
How much does the 2020 Infiniti Q50 cost to fuel per year?
The US EPA estimates about $3,550 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 Infiniti Q50 have any recalls?
NHTSA lists no safety recall campaigns for the 2020 Infiniti Q50 as of 6 October 2026. Recalls can be issued years after a model is sold, so it is still worth checking your own VIN.
What are the most common problems reported for the 2020 Infiniti Q50?
Among the 3 owner complaints filed with NHTSA, the most-reported areas are Power train (1 complaint), Engine (1 complaint), Unspecified (1 complaint). 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 Infiniti Q50 have?
EPA measures interior passenger volume at 100 cubic feet (about 2,832 litres) and luggage volume at 14 cubic feet (about 396 litres). These are US EPA interior-volume figures, which are measured differently from the UK boot-capacity numbers manufacturers quote.