2015 Infiniti Q50 Hybrid — Full Specifications
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The 2015 Infiniti Q50 Hybrid is a saloon/sedan powered by a 3.5L 6-cyl premium gasoline engine. Its most fuel-efficient configuration returns around 37 mpg (UK) / 31 mpg (US EPA) combined, with 36–37 mpg (UK) across all configurations. Owners often keep a Infiniti Q50 Hybrid workshop manual to hand for servicing and repairs.
Related listing: see also the 2015 Infiniti Q50 page for the base Q50 listing, which may cover additional engines and body styles.
Compared with the 2014 Infiniti Q50 Hybrid: Fuel economy is essentially unchanged at around 37 mpg (UK) combined. The engine line-up listed by EPA is unchanged. It carries the same 5★ overall NHTSA rating.
Full Specifications
| Engine | 3.5L 6-cyl |
|---|---|
| Transmission | Automatic (S7) |
| Fuel Type | Premium Gasoline |
| Powertrain | Hybrid |
| Drive | Rear-Wheel Drive |
| Body Style | Saloon/Sedan |
| Passenger Volume (EPA) | 100 cu ft (2,832 L) |
| Luggage Volume (EPA) | 9 cu ft (255 L) |
| Fuel Economy (UK) | 37 combined / 35 urban / 43 extra-urban mpg |
| Fuel Economy (US EPA) | 31 combined / 29 city / 36 highway mpg |
| CO₂ Emissions | 178 g/km |
| EPA Greenhouse Gas Score | 8 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $2,650 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 2 configurations for the 2015 Infiniti Q50 Hybrid, all with the 3.5L 6-cyl engine. Combined fuel economy ranges from 30 to 31 mpg (US), or 36 to 37 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 |
|---|---|---|---|---|---|---|
| 3.5L 6-cyl (Hybrid) | Automatic (S7) | All-Wheel Drive | 36 | 30 (28/34) | 182 | $2,750 |
| 3.5L 6-cyl (Hybrid) | Automatic (S7) | Rear-Wheel Drive | 37 | 31 (29/36) | 178 | $2,650 |
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 9 cubic feet (about 255 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 Q50 Hybrid
Running Costs: 2015 Infiniti Q50 Hybrid
Covering around 8,000 miles a year in a 2015 Infiniti Q50 Hybrid at 37 mpg combined, expect roughly 983 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $2,650 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.
2015 Infiniti Q50 Hybrid Safety Ratings (NHTSA)
Recalls & Owner Complaints (NHTSA)
NHTSA lists 3 safety recall campaigns that include the 2015 Infiniti Q50 Hybrid (as of 6 October 2026). Most affected areas: Power train (1), Steering (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.
- Power train — campaign 24V470000, reported 21 June 2024. Risk: A broken driveshaft can result in a loss of drive power, or a vehicle roll away when the vehicle is in park without the parking brake applied. Both scenarios can increase the risk of a crash.
- Steering — campaign 16V430000, reported 13 June 2016. Risk: If the vehicle does not steer as the driver anticipates, there is an increased the risk of a crash.
- Air bags — campaign 16V244000, reported 26 April 2016. Risk: If the passenger frontal air bag does not deploy as intended in the event of a crash, the passenger is at an increased risk of injury.
Owners have filed 130 complaints with NHTSA about the 2015 Infiniti Q50 Hybrid. The most-reported areas are Power train (41), Steering (29), Vehicle speed control (21). Complaints include 17 reported crashes, 2 reported fires, 12 reported injuries. That is well above the median of 62 complaints across the 5 Infiniti Q50 Hybrid model years in our data.
Used-buyer checklist for the 2015 Infiniti Q50 Hybrid
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 recall campaign · 41 owner complaints) — On the test drive, watch for hesitation, jerking or slipping between gears and ask for transmission service history.
- Steering (1 recall campaign · 29 owner complaints) — Check for play, noise or heavy steering, and ask whether any steering recall work was done.
- Air bags (1 recall campaign · 19 owner complaints) — Confirm any air bag inflator or module recalls were completed — enter the VIN at nhtsa.gov/recalls.
- Throttle & cruise control (21 owner complaints) — Check throttle response and cruise control are smooth, and ask about any software or throttle recalls.
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 2015 Infiniti Q50 Hybrid's 37 mpg is 11 mpg above that make average. Its 178 g/km CO₂ figure is 85 g/km lower than the 263 g/km Infiniti average.
Of the 5 Infiniti Q50 Hybrid model years we cover, the 2015 is the most economical on its best configuration (37 mpg UK combined). See every Infiniti Q50 Hybrid 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 Q50 Hybrid
Frequently Asked Questions
What engine does the 2015 Infiniti Q50 Hybrid have?
It's fitted with a 3.5L 6-cyl premium gasoline engine, paired with a automatic (s7) transmission.
What is the fuel economy of the 2015 Infiniti Q50 Hybrid?
The most efficient configuration returns around 37 mpg (UK) combined, or 31 mpg on the US EPA cycle. Across all configurations the UK combined figure runs from 36 to 37 mpg.
How much does the 2015 Infiniti Q50 Hybrid cost to fuel per year?
The US EPA estimates about $2,650 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 Q50 Hybrid have a good safety rating?
It holds an overall NHTSA rating of 5 stars, with 4 stars for frontal crash protection.
Does the 2015 Infiniti Q50 Hybrid have any recalls?
NHTSA lists 3 safety recall campaigns that include the 2015 Infiniti Q50 Hybrid (as of 6 October 2026). Most affected areas: Power train (1), Steering (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 2015 Infiniti Q50 Hybrid?
Among the 130 owner complaints filed with NHTSA, the most-reported areas are Power train (41 complaints), Steering (29 complaints), Vehicle speed control (21 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 2015 Infiniti Q50 Hybrid have?
EPA measures interior passenger volume at 100 cubic feet (about 2,832 litres) and luggage volume at 9 cubic feet (about 255 litres). These are US EPA interior-volume figures, which are measured differently from the UK boot-capacity numbers manufacturers quote.