DecodedCars2018 Infiniti Q70
Trims, performance, features, fuel economy, safety and known problems — with the pros and cons against similar 2018 models.
- Class
- Midsize Cars
- Body styles
- AWD 4dr Sedan, AWD Sport 4dr Sedan, L AWD 4dr Sedan
- Engines
- 3.5L 6-cyl, 3.7L 6-cyl, 5.6L 8-cyl
- Drivetrain
- Rear-Wheel Drive, All-Wheel Drive
- Fuel
- Hybrid, Premium Gasoline
- MPG (best)
- 30 combined · 28 city / 33 hwy
- Length
- 196.1–202 in
- Curb weight
- 3,863–4,361 lb
- NHTSA rating
- Not rated
- Recalls
- 1 campaign
Pros & cons
What's good
- Hybrid version availableOffered as a hybrid as well as gas.
- AWD / 4WD available
Watch out for
- Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.
Calculated from EPA, NHTSA and vPIC data against 34 similar 2018 models — not a review. How we calculate this →
Overview
The 2018 Infiniti Q70 is a midsize car offered with 3 engines (3.5L 6-cyl, 3.7L 6-cyl and 5.6L 8-cyl), including a hybrid version and rear-wheel drive and all-wheel drive.
It measures about 196 inches long and 73 inches wide on a 114-inch wheelbase, with a curb weight of roughly 3,863 lb (AWD 4dr Sedan).
EPA rates its most efficient version at 30 MPG combined (28 city / 33 highway), 10% better than the 2018 midsize car average of 27.2 MPG, for an estimated $2,750 a year in fuel.
NHTSA has not published a 5-Star overall rating for this model year.
It has 1 recall campaign on file and owners have filed 4 complaints with NHTSA since 2015, most often about the air bags.
What changed for 2018
No changes to engines, powertrains, drivetrains, size, EPA ratings or NHTSA crash rating compared with the 2017 Q70 — a carry-over year in the data.
Compared with 2017; trim, feature and price changes aren't covered. See the 2017 Q70 →
Dimensions & weight
| Body | Length | Width | Height | Wheelbase | Track F / R | Curb weight | Weight F/R |
|---|---|---|---|---|---|---|---|
| AWD 4dr Sedan | 196.1 in | 72.8 in | 59.8 in | 114.2 in | 62.2 / 61.8 in | 3,863 lb | 54/46 |
| AWD Sport 4dr Sedan | 196.1 in | 72.8 in | 59.8 in | 114.2 in | 62.2 / 61.8 in | 4,059 lb | 55/45 |
| L AWD 4dr Sedan | 202 in | 72.8 in | 59.8 in | 120.1 in | 62.2 / 61.8 in | 4,361 lb | 57/43 |
Transport Canada CVS (Open Government Licence – Canada), Canadian-market figures.
Will it fit your garage? Check with your measurements →Engines, MPG & running costs
| Version | Engine | Transmission | Drive | City / Hwy / Comb | vs. class | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|---|---|
| Q70 Hybrid Hybrid | 3.5L 6-cyl | Automatic (S7) | Rear-Wheel Drive | 28 / 33 / 30 | +10% | $2,750 | 296 |
| Q70 | 3.7L 6-cyl | Automatic (S7) | Rear-Wheel Drive | 18 / 25 / 21 | -23% | $3,900 | 433 |
| Q70 AWD | 3.7L 6-cyl | Automatic (S7) | All-Wheel Drive | 18 / 24 / 20 | -26% | $4,100 | 442 |
| Q70 | 5.6L 8-cyl | Automatic (S7) | Rear-Wheel Drive | 16 / 24 / 19 | -30% | $4,350 | 464 |
| Q70 AWD | 5.6L 8-cyl | Automatic (S7) | All-Wheel Drive | 16 / 23 / 18 | -34% | $4,550 | 490 |
EPA estimates; "vs. class" is combined MPG against the 2018 EPA class average. How we calculate this →
Safety ratings & technology
| Version | Overall | Frontal | Driver / passenger | Side | Side pole | Rollover | Rollover risk |
|---|---|---|---|---|---|---|---|
| 2018 Infiniti Q70 Hybrid 4 DR RWD | Not rated | ★★★★★ | 5★ / 4★ | Not rated | Not rated | ★★★★★ | 11.3% |
Similar 2018 midsize cars
| Model | Best MPG / range | NHTSA overall | Recalls |
|---|---|---|---|
| 2018 Infiniti Q70 (this car) | 30 MPG | Not rated | 1 |
| 2018 BMW 5 Series | 30 MPG | Not rated | 0 |
| 2018 Mercedes-Benz E-Class | 25 MPG | ★★★★★ | 0 |
| 2018 Mercedes-Benz C-Class | 30 MPG | Not rated | 0 |
| 2018 Audi A6 | 28 MPG | ★★★★★ | 2 |
| 2018 Lincoln Continental | 21 MPG | ★★★★★ | 2 |
| 2018 Tesla Model S | 335 mi | Not rated | 11 |
Recalls (1)
Power Train › Driveline › Driveshaft · Jun 21, 2024
NHTSA campaign 24V470000 · 7,222 vehicles
- Problem
- Nissan North America, Inc. (INFINITI) is recalling certain 2011-2013 M56, 2012-2013 M35 Hybrid, 2014-2018 Q50, Q70 Hybrid, 2014-2019 Q70, and 2015-2019 Q70L two-wheel drive vehicles. The driveshaft can fatigue and break.
- 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.
- Fix
- Dealers will replace the driveshaft, free of charge. Owner notification letters were mailed August 13, 2024. Owners may contact INFINITI's customer service at 1-800-662-6200. INFINITI's numbers for this recall are R24A5 and R24A7.
Not every 2018 Infiniti Q70 is affected — only a VIN check confirms your car.
Owner-reported problems
Unverified owner reports; best-sellers collect more.
Used 2018 Infiniti Q70 buyer's checklist
- Run the VIN at nhtsa.gov/recalls. 1 recall this year — ask for proof of repairs.
- Air Bags — 4 owner reports. Confirm the airbag warning light turns off after start-up and any airbag recall was completed.
- Seat Belts — 1 owner reports. Confirm the airbag warning light turns off after start-up and any airbag recall was completed.
- Electrical System — 1 owner reports. Test every window, lock, light, screen and USB port; check the battery age.
- Hybrid system. Check for hybrid-system warning lights and ask whether the high-voltage battery has been replaced or is still under warranty.
- Before you pay: service records, a history report and an independent inspection.
Generated by DecodedCars from NHTSA recalls and owner complaints for the 2018 Infiniti Q70. Not a substitute for a professional inspection.
Other Q70 years
Compare all years →Sources: EPA, NHTSA, Transport Canada, Wikimedia Commons. Not affiliated with NHTSA, the EPA or Infiniti. How we calculate this →