2014 Infiniti Q50 — Full Specifications
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The 2014 Infiniti Q50 is a saloon/sedan offered with 2 engines (3.5L 6-cyl, 3.7L 6-cyl). Its most fuel-efficient configuration returns around 28 mpg (UK) / 23 mpg (US EPA) combined, with 26–37 mpg (UK) across all configurations. A hybrid version is also listed by EPA (3.5L 6-cyl), returning around 37 mpg (UK) combined. Owners often keep a Infiniti Q50 workshop manual to hand for servicing and repairs.
Related 2014 listings: Infiniti Q50 Hybrid.
Full Specifications
| Engine (most efficient) | 3.7L 6-cyl |
|---|---|
| Engine options | 3.5L 6-cyl · 3.7L 6-cyl |
| Transmission (most efficient) | 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 | 239 g/km |
| EPA Greenhouse Gas Score | 8 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $3,550 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 4 configurations for the 2014 Infiniti Q50 across 2 engines (3.5L 6-cyl, 3.7L 6-cyl). Combined fuel economy ranges from 22 to 31 mpg (US), or 26 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) | 175 | $2,650 |
| 3.7L 6-cyl | Automatic (S7) | All-Wheel Drive | 26 | 22 (19/27) | 255 | $3,750 |
| 3.7L 6-cyl | Automatic (S7) | Rear-Wheel Drive | 28 | 23 (20/29) | 239 | $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 2014 Infiniti Q50
Running Costs: 2014 Infiniti Q50
Covering around 8,000 miles a year in a 2014 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.
2014 Infiniti Q50 Safety Ratings (NHTSA)
Recalls & Owner Complaints (NHTSA)
NHTSA lists 8 safety recall campaigns that include the 2014 Infiniti Q50 (as of 6 October 2026). Most affected areas: Power train (2), Steering (2), 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.
- Engine and engine cooling — campaign 14V583000, reported 22 September 2014. Risk: The vehicle may gradually accelerate due to the throttle chamber reopening. This unexpected acceleration may increase the risk of a crash.
Showing the 4 most recent of 8 campaigns.
Owners have filed 189 complaints with NHTSA about the 2014 Infiniti Q50. The most-reported areas are Steering (85), Electrical system (47), Power train (19). Complaints include 14 reported crashes, 2 reported fires, 8 reported injuries, 2 reported deaths. That is well above the median of 34 complaints across the 10 Infiniti Q50 model years in our data.
Used-buyer checklist for the 2014 Infiniti Q50
Based on where NHTSA recalls and owner complaints cluster for this model year, these are the areas worth checking before you buy:
- Steering (2 recall campaigns · 85 owner complaints) — Check for play, noise or heavy steering, and ask whether any steering recall work was done.
- Electrical system (47 owner complaints) — Test every switch, window, light and warning lamp on a test drive, and ask about battery or alternator replacements.
- Transmission & drivetrain (2 recall campaigns · 19 owner complaints) — On the test drive, watch for hesitation, jerking or slipping between gears and ask for transmission service history.
- Air bags (1 recall campaign · 18 owner complaints) — Confirm any air bag inflator or module recalls were completed — enter the VIN at nhtsa.gov/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 2014 Infiniti Q50's 28 mpg is 2 mpg above that make average. Its 239 g/km CO₂ figure is 24 g/km lower than the 263 g/km Infiniti average.
Of the 11 Infiniti Q50 model years we cover, the 2014 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 2014 Infiniti Q50
Frequently Asked Questions
What engine does the 2014 Infiniti Q50 have?
EPA lists 2 engines for the 2014 Infiniti Q50: 3.5L 6-cyl, 3.7L 6-cyl. The most fuel-efficient configuration pairs the 3.7L 6-cyl with a automatic (s7).
What is the fuel economy of the 2014 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 37 mpg. The hybrid version returns around 37 mpg (UK) combined.
How much does the 2014 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 2014 Infiniti Q50 have a good safety rating?
It holds an overall NHTSA rating of 5 stars, with 4 stars for frontal crash protection.
Does the 2014 Infiniti Q50 have any recalls?
NHTSA lists 8 safety recall campaigns that include the 2014 Infiniti Q50 (as of 6 October 2026). Most affected areas: Power train (2), Steering (2), 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 2014 Infiniti Q50?
Among the 189 owner complaints filed with NHTSA, the most-reported areas are Steering (85 complaints), Electrical system (47 complaints), Power train (19 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 2014 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.