Research · Midsize Cars

2018 Infiniti Q70Recalls, problems, MPG & safety

NHTSA lists 1 safety recall and 1 owner complaint for the 2018 Infiniti Q70. Most complaints involve air bags (1) and seat belts (1). The EPA rates it 18–21 mpg combined.

Combined MPG
18–21mpg
EPA · 4 versions
NHTSA overall
—
Not rated by NCAP
Safety recalls
1campaigns
Latest Jun 2024
Owner complaints
1
Top: air bags
Fuel cost / yr
$3,800est.
EPA estimate, best version
01 —Recalls

Safety recalls

1 NHTSA campaign · applies to some vehicles, check your VIN

Power train: driveshaft

Free remedy

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.

Power trainReported Jun 21, 2024NHTSA 24V470000
Data from NHTSA Recalls API · synced Oct 31, 2026 · All recall detailsNHTSA vehicle page
02 —Complaints

Owner complaints by component

1 complaints filed with NHTSA · Mar 2024 – Mar 2024
  1. Air bags1
  2. Seat belts1

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

By model year

Complaints for each Q70 model year we’ve synced.

View as table
Model yearNHTSA complaints
20141
201510
20163
20172
20181
20192
Crashes reported
0
Fires reported
0
Injuries reported
0
Deaths reported
0
Data from NHTSA Complaints API · synced Oct 31, 2026NHTSA vehicle page
03 —Common problems

What owners report most

Verbatim excerpts from NHTSA complaints, by component

Air bags

1 report
“seat belt and air bag warning light on, had dealer check stated problem in the passenger seat cushion and notofied factory but no satisfaction.”
Owner complaint to NHTSAFiled Mar 2, 2024Air bags, Seat beltsODI 11575017

Seat belts

1 report
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 31, 2026
04 —Key specs

Engines, transmissions & drive

4 versions rated by the EPA
EPA class
Midsize Cars
Engines
3.7L 6-cyl · 5.6L 8-cyl
Transmissions
Automatic (S7)
Drive
Rear-Wheel Drive · All-Wheel Drive
Fuel
Premium Gasoline

Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.

Data from EPA fueleconomy.gov · synced Oct 31, 2026EPA listing
05 —Fuel economy

EPA fuel economy by version

City / highway / combined, annual fuel cost and CO₂
EPA
VersionCityHwyComb.Fuel / yrCO₂ g/mi
Q70
Auto (S7), 6 cyl, 3.7 L · Rear-Wheel Drive
182521$3,800433
Q70 AWD
Auto (S7), 6 cyl, 3.7 L · All-Wheel Drive
182420$4,000442
Q70
Auto (S7), 8 cyl, 5.6 L · Rear-Wheel Drive
162419$4,200464
Q70 AWD
Auto (S7), 8 cyl, 5.6 L · All-Wheel Drive
162318$4,400490
  • Q70
    Auto (S7), 6 cyl, 3.7 L
    18 city · 25 hwy · $3,800/yr
    21
    mpg comb.
  • Q70 AWD
    Auto (S7), 6 cyl, 3.7 L
    18 city · 24 hwy · $4,000/yr
    20
    mpg comb.
  • Q70
    Auto (S7), 8 cyl, 5.6 L
    16 city · 24 hwy · $4,200/yr
    19
    mpg comb.
  • Q70 AWD
    Auto (S7), 8 cyl, 5.6 L
    16 city · 23 hwy · $4,400/yr
    18
    mpg comb.
Data from EPA fueleconomy.gov · synced Oct 31, 2026 · Fuel cost is EPA’s annual estimate (15,000 mi, 55% city)
06 —Safety

NHTSA 5-Star Safety Ratings

2 tested variants
NHTSA has not published 5-Star Safety Ratings for the 2018 Infiniti Q70 as of Oct 31, 2026.
Data from NHTSA NCAP Safety Ratings API · synced Oct 31, 2026Vehicle 12632Vehicle 12631
07 —Maintenance

Maintenance basics

General guidance, not the OEM schedule. Check your owner’s manual.
General guidance
ItemMilesTimeNote
Engine oil & filter5,000–10,000 mi6–12 monthsFollow the oil-life monitor if fitted
Tire rotation5,000–7,500 miEvery oil changeCheck pressure monthly
Engine air filter15,000–30,000 mi1–2 yearsSooner in dusty areas
Cabin air filter15,000–25,000 mi1–2 years
Brake fluid—2–3 yearsAbsorbs moisture over time
Coolant60,000–100,000 mi5–10 yearsLong-life coolants last longer
Spark plugs60,000–100,000 mi—Iridium/platinum plugs at the long end
12V battery—3–5 yearsHeat shortens battery life
  • Engine oil & filter5,000–10,000 mi
    6–12 months
  • Tire rotation5,000–7,500 mi
    Every oil change
  • Engine air filter15,000–30,000 mi
    1–2 years
  • Cabin air filter15,000–25,000 mi
    1–2 years
  • Brake fluid—
    2–3 years
  • Coolant60,000–100,000 mi
    5–10 years
  • Spark plugs60,000–100,000 mi
    —
  • 12V battery—
    3–5 years
Typical intervals for modern cars. Severe service (towing, short trips, extreme heat or cold) shortens them.
09 —FAQ

2018 Q70 questions

How many recalls does the 2018 Infiniti Q70 have?

1 safety recall as of Oct 31, 2026, according to NHTSA. Recall repairs are free at a dealer. Check your VIN to see whether your car is included and whether the repair was done.

What are the most common 2018 Infiniti Q70 problems?

Owners filed 1 complaints with NHTSA. The most-cited components are air bags (1), seat belts (1). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.

What MPG does the 2018 Infiniti Q70 get?

The EPA rates the 2018 Infiniti Q70 at 18–21 mpg combined, depending on engine and drivetrain (4 versions rated).

Data from NHTSA & EPA · synced Oct 31, 2026