2015 Infiniti QX50 — Full Specifications
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Running gear matters most — before anything else, UK: check tyre prices at TirendoUS: check wheel & tyre prices at WheelHero for this car's fitment.
The 2015 Infiniti QX50 is an estate/wagon powered by a 3.7L 6-cyl premium gasoline engine. It returns around 24 mpg (UK) / 20 mpg (US EPA) combined. Owners often keep a Infiniti QX50 workshop manual to hand for servicing and repairs.
Compared with the 2014 Infiniti QX50: Fuel economy is essentially unchanged at around 24 mpg (UK) combined. The engine line-up listed by EPA is unchanged.
Full Specifications
| Engine | 3.7L 6-cyl |
|---|---|
| Transmission | Automatic (S7) |
| Fuel Type | Premium Gasoline |
| Powertrain | Conventional |
| Drive | All-Wheel Drive |
| Body Style | Estate/Wagon |
| Length | 4630 mm |
| Width | 1800 mm |
| Passenger Volume (EPA) | 92 cu ft (2,605 L) |
| Luggage Volume (EPA) | 19 cu ft (538 L) |
| Fuel Economy (UK) | 24 combined / 20 urban / 29 extra-urban mpg |
| Fuel Economy (US EPA) | 20 combined / 17 city / 24 highway mpg |
| CO₂ Emissions | 278 g/km |
| EPA Greenhouse Gas Score | 5 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $4,100 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 2 configurations for the 2015 Infiniti QX50, all with the 3.7L 6-cyl engine. 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 |
|---|---|---|---|---|---|---|
| 3.7L 6-cyl | Automatic (S7) | All-Wheel Drive | 24 | 20 (17/24) | 278 | $4,100 |
| 3.7L 6-cyl | Automatic (S7) | Rear-Wheel Drive | 24 | 20 (17/25) | 280 | $4,100 |
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 92 cubic feet (about 2,605 litres) and luggage volume at 19 cubic feet (about 538 litres). These are US EPA interior-volume figures; they are measured differently from the boot capacity numbers UK manufacturers quote.
Owner Essentials for the 2015 Infiniti QX50
Running Costs: 2015 Infiniti QX50
Covering around 8,000 miles a year in a 2015 Infiniti QX50 at 24 mpg combined, expect roughly 1,515 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $4,100 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.
2015 Infiniti QX50 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 2015 Infiniti QX50 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 2015 Infiniti QX50. The most-reported areas are Power train (1), Exterior lighting (1), Engine (1). That is well below the median of 13 complaints across the 11 Infiniti QX50 model years in our data.
Used-buyer checklist for the 2015 Infiniti QX50
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.
- Lighting (1 owner complaint) — Check every exterior light works and look for moisture inside the lamp housings.
- Engine (1 owner complaint) — Listen for unusual noise on a cold start, check for warning lights and ask for the service records.
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 estate/wagons? For context, estate/wagons in our database average around 34 mpg (UK) combined — this model's 24 mpg figure is 10 mpg below that average. Its 278 g/km CO₂ figure is 75 g/km higher than the 203 g/km average for estate/wagons on this site. This comparison is based on 194 estate/wagons in our dataset.
Infiniti models in our database average about 26 mpg (UK) combined on their most efficient configuration; the 2015 Infiniti QX50's 24 mpg is 2 mpg below that make average. Its 278 g/km CO₂ figure is 15 g/km higher than the 263 g/km Infiniti average.
Of the 11 Infiniti QX50 model years we cover, the 2015 ranks 8th for combined fuel economy on its best configuration (24 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 2015 Infiniti QX50
Frequently Asked Questions
What engine does the 2015 Infiniti QX50 have?
It's fitted with a 3.7L 6-cyl premium gasoline engine, paired with a automatic (s7) transmission.
What is the fuel economy of the 2015 Infiniti QX50?
The most efficient configuration returns around 24 mpg (UK) combined, or 20 mpg on the US EPA cycle.
How much does the 2015 Infiniti QX50 cost to fuel per year?
The US EPA estimates about $4,100 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 2015 Infiniti QX50 have any recalls?
NHTSA lists no safety recall campaigns for the 2015 Infiniti QX50 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 2015 Infiniti QX50?
Among the 3 owner complaints filed with NHTSA, the most-reported areas are Power train (1 complaint), Exterior lighting (1 complaint), Engine (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 2015 Infiniti QX50 have?
EPA measures interior passenger volume at 92 cubic feet (about 2,605 litres) and luggage volume at 19 cubic feet (about 538 litres). These are US EPA interior-volume figures, which are measured differently from the UK boot-capacity numbers manufacturers quote.
Is the Infiniti QX50's fuel economy good for an estate/wagon?
It returns around 24 mpg (UK) combined, against a same-body-style average of roughly 34 mpg among the estate/wagons we track.