2020 Infiniti QX50 — Full Specifications
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The 2020 Infiniti QX50 is an SUV powered by a 2L 4-cyl turbo premium gasoline engine. Its most fuel-efficient configuration returns around 31 mpg (UK) / 26 mpg (US EPA) combined, with 30–31 mpg (UK) across all configurations. Owners often keep a Infiniti QX50 workshop manual to hand for servicing and repairs.
Compared with the 2019 Infiniti QX50: Fuel economy is essentially unchanged at around 31 mpg (UK) combined. The engine line-up listed by EPA is unchanged. It carries the same 5★ overall NHTSA rating.
Full Specifications
| Engine | 2L 4-cyl turbo |
|---|---|
| Transmission | Automatic (AV-S8) |
| Fuel Type | Premium Gasoline |
| Powertrain | Conventional |
| Drive | Front-Wheel Drive |
| Body Style | SUV |
| Length | 4630 mm |
| Width | 1800 mm |
| Fuel Economy (UK) | 31 combined / 28 urban / 35 extra-urban mpg |
| Fuel Economy (US EPA) | 26 combined / 23 city / 29 highway mpg |
| CO₂ Emissions | 215 g/km |
| EPA Greenhouse Gas Score | 5 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $3,150 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 2 configurations for the 2020 Infiniti QX50, all with the 2L 4-cyl turbo engine. Combined fuel economy ranges from 25 to 26 mpg (US), or 30 to 31 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 (AV-S8) | All-Wheel Drive | 30 | 25 (22/28) | 227 | $3,300 |
| 2L 4-cyl turbo | Automatic (AV-S8) | Front-Wheel Drive | 31 | 26 (23/29) | 215 | $3,150 |
MPG (US) shows combined, with city/highway in brackets. Highlighted row = the configuration used for the headline figures. Source: US EPA fueleconomy.gov.
Owner Essentials for the 2020 Infiniti QX50
Running Costs: 2020 Infiniti QX50
Covering around 8,000 miles a year in a 2020 Infiniti QX50 at 31 mpg combined, expect roughly 1,173 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $3,150 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.
Planning a road trip? Grab a road trip packing list. Only need this car occasionally? See our buy vs rent comparison.
2020 Infiniti QX50 Safety Ratings (NHTSA)
Recalls & Owner Complaints (NHTSA)
NHTSA lists 2 safety recall campaigns that include the 2020 Infiniti QX50 (as of 6 October 2026). Most affected areas: Engine and engine cooling (1), Tires (1). A campaign often covers several model years or models, so check your own VIN to see whether your car is affected.
- Engine and engine cooling — campaign 25V437000, reported 27 June 2025. Risk: Engine failure increases the risk of a crash. A bearing failure may cause a breach in the engine block, allowing hot oil to be discharged, increasing the risk of an engine fire.
- Tires — campaign 21V025000, reported 26 January 2021. Risk: Illegible tire size or loading capacity information can lead to the incorrect sized tire being installed or its overloading, increasing the risk of a crash.
Owners have filed 33 complaints with NHTSA about the 2020 Infiniti QX50. The most-reported areas are Engine (18), Forward collision avoidance (7), Power train (4). That is well above the median of 13 complaints across the 11 Infiniti QX50 model years in our data.
Used-buyer checklist for the 2020 Infiniti QX50
Based on where NHTSA recalls and owner complaints cluster for this model year, these are the areas worth checking before you buy:
- Engine (18 owner complaints) — Listen for unusual noise on a cold start, check for warning lights and ask for the service records.
- Engine cooling (1 recall campaign · 4 owner complaints) — Check coolant level, look for leaks and make sure the temperature stays steady in traffic.
- Tyres (1 recall campaign) — Check tyre age and wear and ask about any tyre recalls.
- Driver-assist sensors (7 owner complaints) — Check that driver-assist warning lights are off and sensors are clean and undamaged.
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
How does the Infiniti QX50 compare to similar SUVs? For context, SUVs in our database average around 27 mpg (UK) combined — this model's 31 mpg figure is 4 mpg better than that average. Its 215 g/km CO₂ figure is 38 g/km lower than the 253 g/km average for SUVs on this site. This comparison is based on 1824 SUVs in our dataset.
Infiniti models in our database average about 26 mpg (UK) combined on their most efficient configuration; the 2020 Infiniti QX50's 31 mpg is 5 mpg above that make average. Its 215 g/km CO₂ figure is 48 g/km lower than the 263 g/km Infiniti average.
Of the 11 Infiniti QX50 model years we cover, the 2020 ranks 2nd for combined fuel economy on its best configuration (31 mpg UK combined, against a high of 32 mpg). See every Infiniti QX50 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 QX50
Frequently Asked Questions
What engine does the 2020 Infiniti QX50 have?
It's fitted with a 2L 4-cyl turbo premium gasoline engine, paired with a automatic (av-s8) transmission.
What is the fuel economy of the 2020 Infiniti QX50?
The most efficient configuration returns around 31 mpg (UK) combined, or 26 mpg on the US EPA cycle. Across all configurations the UK combined figure runs from 30 to 31 mpg.
How much does the 2020 Infiniti QX50 cost to fuel per year?
The US EPA estimates about $3,150 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 QX50 have a good safety rating?
It holds an overall NHTSA rating of 5 stars, with 5 stars for frontal crash protection.
Does the 2020 Infiniti QX50 have any recalls?
NHTSA lists 2 safety recall campaigns that include the 2020 Infiniti QX50 (as of 6 October 2026). Most affected areas: Engine and engine cooling (1), Tires (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 Infiniti QX50?
Among the 33 owner complaints filed with NHTSA, the most-reported areas are Engine (18 complaints), Forward collision avoidance (7 complaints), Power train (4 complaints). Complaints are unverified owner reports, not confirmed defects, and raw counts rise with how many cars were sold.
Is the Infiniti QX50's fuel economy good for an SUV?
Yes — it returns around 31 mpg (UK) combined, against a same-body-style average of roughly 27 mpg among the SUVs we track, making it one of the more efficient options in its class.