Is the 2021 Infiniti QX50 reliable?

The 2021 Infiniti QX50 has 54 complaints filed with NHTSA (3.0x the segment average). Our reliability verdict: below-average. Most common issue: ENGINE problems.

What are common problems with the 2021 Infiniti QX50?

Top problems: ENGINE (21 complaints, avg repair $500); DRIVER ASSIST/CAMERAS (9 complaints, avg repair $500); ELECTRICAL (7 complaints, avg repair $500). Issues typically appear around 50K miles.

Are there any recalls on the 2021 Infiniti QX50?

Yes, there are 2 recall(s): SUSPENSION:REAR:AXLE:SPINDLE, ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL. Contact any Infiniti dealer to verify if recalls have been completed on your specific vehicle.

How much does it cost to fuel a 2021 Infiniti QX50?

The 2021 Infiniti QX50 gets 26 MPG combined. At current US average gas prices, driving 12,000 miles per year costs roughly $1846. See the interactive fuel cost calculator on this page for state-specific pricing.

How much does it cost to insure a 2021 Infiniti QX50?

Estimated US average full-coverage insurance for the 2021 Infiniti QX50 is approximately $2,231/year (suv-luxury class). Actual quotes vary heavily by state, driver age, driving record, and credit — see the interactive insurance estimator on this page for state-specific pricing.

2021 Infiniti QX50

Problems, Recalls & Reliability Report

Below Average

Quick Summary

The 2021 Infiniti QX50 has 54 owner complaints filed with NHTSA — that's 3.0x the segment average of 18. The most common issue is engine problems (39% of all complaints), specifically: i purchased this 2021 qx50 infiniti on [xxx] and have experienced consistent engine knocking. in checking out this problem, i have found that it is apparently a widespread problem with the engine in 2021 qx50 vehicles and can possibly lead to engine lock up and engine failure. the engine thus far h. There are 2 recalls issued for this model year.

1 crash report 1 injury

Total Complaints

Recalls Issued

5/5

Safety Stars

3.0x

vs Segment Avg

Known Problems(top 5 of 8)

ENGINE

21 complaints

39%

• I purchased this 2021 QX50 Infiniti on [XXX] and have experienced consistent engine knocking. In checking out this problem, I have found that it is apparently a widespread problem with the engine in 2021 QX50 vehicles and can possibly lead to engine lock up and engine failure. The engine thus far h
• Without any warning or indicator light on the dash, the vehicle lost power when pulling out of our driveway - we live on a main road and were very lucky not to be hit by upcoming traffic. The car went into limp mode and would not accelerate past 20mph. We have been fighting with Infiniti for the las
• The contact owns a 2021 Infiniti QX50. The contact stated that while driving at an undisclosed speed, there was an abnormal sound coming from the engine compartment, prompting the contact to discontinue driving the vehicle. No warning lights were illuminated. The vehicle was taken to the dealer, who

Typical onset: 50K miles Est. repair: $500

“I purchased this 2021 QX50 Infiniti on [XXX] and have experienced consistent engine knocking. In checking out this problem, I have found that it is apparently a widespread problem with the engine in 2021 QX50 vehicles and can possibly lead to engine lock up and engine failure. The engine thus far h”

— NHTSA complaint filing

When Problems Appear on the 2021 Infiniti QX50

Based on 10 owner complaints that included an odometer reading. Median mileage at time of complaint: 71K miles. Most complaints cluster in the 60-100K miles range.

Overall complaint distribution by mileage

0-30K

30-60K

60-100K

100-150K

150-200K

200K+

ENGINE

In line with typicalmedian 90K mi · 7 reports

0-30K

30-60K

60-100K

100-150K

150-200K

200K+

Mileage figures are self-reported by owners in NHTSA complaint filings. Peak bucket = the mileage range with the most complaints for that component; it reflects when owners noticed and reported problems, not necessarily when the fault first occurred.

Recalls (2)

SUSPENSION:REAR:AXLE:SPINDLE27/05/2021

Nissan North America, Inc. (Nissan) is recalling certain 2020 Nissan Murano, INFINITI QX60, 2021 Nissan GT-R, INFINITI QX50, and Q50 vehicles. The front steering knuckle or rear axle housing may have insufficient strength due to improper heat-treatment.

Risk: The steering knuckle or rear axle could deform upon impact, such as from hitting a curb, resulting in a loss of steering control, or possible wheel separation. Both of these conditions can increase the risk of a crash.

Fix: Dealers will inspect and replace the front steering knuckle and rear axle housing, as necessary, free of charge. Owner notification letters were mailed July 26, 2021. Nissan owners may contact customer service at 1-800-867-7669. INFINITI owners may contact customer service at 1-800-662-6200.

Fuel Cost Calculator for 2021 Infiniti QX50

Live EIA prices

Annual miles driven: 12,000

Your state (affects local gasoline price)

Per year

$1,847

Per month

$154

Per mile

15.4¢

MPG

City driving (worst-case MPG)

$2,087/yr

Highway driving (best-case MPG)

$1,656/yr

Based on EPA fuel-economy ratings and EIA weekly retail prices (2026-07-20). Real-world cost varies with driving style, trim/engine, terrain, and traffic.

5-Year Gas Price History

EIA weekly retail data · 2021 → today

Show:

Current

$4.00

5-year low

$2.78

5-year high

$5.01

Since 2021

+27%

Source: US Energy Information Administration weekly retail gasoline prices.

Estimated Insurance Cost for 2021 Infiniti QX50

Estimate only, not a quote. Modeled from NAIC + HLDI averages for a hypothetical 35-year-old driver with clean record + full coverage. Your actual quote depends heavily on your age, driving history, credit, ZIP code, and insurer.

Your state (affects local premium average)

Full coverage / year

$2,231

Full coverage / month

$186

Liability only / year

$688

vs US avg

+33%

How this estimate is calculated

US base full-coverage premium$1674

× state (US)1.00x

× vehicle class (suv-luxury)1.35x

× theft risk1.00x

× safety rating0.94x

× vehicle age1.05x

= Full coverage estimate$2231

Coverage assumed: 100/300/100 liability + comprehensive/collision, $500 deductibles. Data sources: NAIC 2024 + HLDI loss studies.

Maintenance & Warranty

Infiniti New-Vehicle Warranty Coverage

Bumper-to-bumper (basic)

4 yr / 60K mi

Powertrain

6 yr / 70K mi

Hybrid/EV battery

8 yr / 100K mi

Corrosion (rust perforation)

7 yr / unlimited mi

Roadside assistance

4 yr / unlimited mi

These are the terms for a new Infiniti. If you're buying a used 2021 QX50, remaining coverage is usually pro-rated from the vehicle's original in-service date. Not all coverage transfers between owners — check with a Infiniti dealer for VIN-specific remaining warranty.

Estimated Repair Costs

ENGINE(~50K mi)

$500

DRIVER ASSIST/CAMERAS(~50K mi)

$500

ELECTRICAL(~50K mi)

$500

BRAKES(~50K mi)

$500

OTHER(~50K mi)

$500

Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.

🔍 Pre-Purchase Inspection Checklist

Based on 54 owner complaints for this specific year, here's what to check or ask about:

☐
ENGINE: I purchased this 2021 QX50 Infiniti on [XXX] and have experienced consistent engine knocking. In checking out this problem, I have found that it is apparently a widespread problem with the engine in 2021 QX50 vehicles and can possibly lead to engine lock up and engine failure. The engine thus far h
Typically appears around 50K miles. Repair cost ~$500
☐
DRIVER ASSIST/CAMERAS: Picked up the car on 5/25, on 6/4 sitting at a red light, forward collision warning and lane assist malfunctions showed up on dashboard. Called Faulkner willow grove where my company leased the car, the set up an appt on 6/17. the next day, 6/18 both malfunctions came back, I called and said I don't
Typically appears around 50K miles. Repair cost ~$500
☐
ELECTRICAL: 3 separate accounts of automatic braking (phantom braking ) has occurred on the last year and electronic emergency brake would not engage 3 times in one day. Worried about rear end collision due to my car braking on its own. Brought to an infinity dealer who tested it with software (unknown type or
Typically appears around 50K miles. Repair cost ~$500
☐
BRAKES: Picked up the car on 5/25, on 6/4 sitting at a red light, forward collision warning and lane assist malfunctions showed up on dashboard. Called Faulkner willow grove where my company leased the car, the set up an appt on 6/17. the next day, 6/18 both malfunctions came back, I called and said I don't
Typically appears around 50K miles. Repair cost ~$500
☐
RECALLS: Verify all 2 recalls have been completed — free at any Infiniti dealer
☐
General: Get a pre-purchase inspection from an independent mechanic ($100-$200)