Is the 2018 Lexus NX reliable?

The 2018 Lexus NX has 23 complaints filed with NHTSA (1.0x the segment average). Our reliability verdict: above-average. Most common issue: FUEL SYSTEM problems.

What are common problems with the 2018 Lexus NX?

Top problems: FUEL SYSTEM (8 complaints, avg repair $500); ENGINE (4 complaints, avg repair $500); BRAKES (2 complaints, avg repair $500). Issues typically appear around 50K miles.

Are there any recalls on the 2018 Lexus NX?

No recalls have been issued for the 2018 Lexus NX.

How much does it cost to fuel a 2018 Lexus NX?

The 2018 Lexus NX gets 25 MPG combined. At current US average gas prices, driving 12,000 miles per year costs roughly $1920. See the interactive fuel cost calculator on this page for state-specific pricing.

How much does it cost to insure a 2018 Lexus NX?

Estimated US average full-coverage insurance for the 2018 Lexus NX is approximately $2,260/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.

2018 Lexus NX

Problems, Recalls & Reliability Report

Above Average

Quick Summary

The 2018 Lexus NX has 23 owner complaints filed with NHTSA — that's 1.0x the segment average of 23. The most common issue is fuel system problems (35% of all complaints), specifically: i was driving on 64 and at a sudden my 2018 nx 300 stopped accelerating and engine was stalled. i was lucky that the highway was not busy, so i was able to park it on the shoulder of hwy and later towed it to my home. the car was not drivable anymore as engine was keep shutting down with the warning.

1 crash report 1 injury

Total Complaints

Recalls Issued

—/5

Safety Stars

1.0x

vs Segment Avg

Known Problems(top 5 of 8)

FUEL SYSTEM

8 complaints

35%

• I was driving on 64 and at a sudden my 2018 NX 300 stopped accelerating and engine was stalled. I was lucky that the highway was not busy, so I was able to park it on the shoulder of HWY and later towed it to my home. The car was not drivable anymore as engine was keep shutting down with the warning
• My lexus 300NX2018, received a dashboard random warning signal; take vehicle to get service while i was driving. Had my vehicle towed to Lexus of Cherry Hill, point of care for my vehicle services. Explained via text messaging with the Lexus Advisor (Jamie)the issue of vehicle (1) the sudden dashb
• Fuel pump went out while driving on an 80 mile per hour speed limit road causing my car to stall.

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

“I was driving on 64 and at a sudden my 2018 NX 300 stopped accelerating and engine was stalled. I was lucky that the highway was not busy, so I was able to park it on the shoulder of HWY and later towed it to my home. The car was not drivable anymore as engine was keep shutting down with the warning”

— NHTSA complaint filing

Fuel Cost Calculator for 2018 Lexus NX

Live EIA prices

Annual miles driven: 12,000

Your state (affects local gasoline price)

Per year

$1,920

Per month

$160

Per mile

16.0¢

MPG

City driving (worst-case MPG)

$2,182/yr

Highway driving (best-case MPG)

$1,715/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 2018 Lexus NX

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

$2,260

Full coverage / month

$188

Liability only / year

$732

vs US avg

+35%

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 rating1.00x

× vehicle age1.00x

= Full coverage estimate$2260

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

Maintenance & Warranty

Recommended Lexus NX Service Intervals

Oil change

10K mi / 12 mo

Tire rotation

5K mi

Brake fluid

30 months

Transmission fluid

60K mi

Engine coolant

100K mi

Spark plugs

120K mi

Cabin air filter

30K mi

Engine air filter

30K mi

Differential (AWD/4WD)

60K mi

Toyota Motor Corporation-recommended 10K interval with 0W-20 synthetic. Hybrid models use conventional service intervals; battery is 10-year warranty.

"Severe service" conditions (heavy towing, extreme temps, city stop-and-go) typically halve these intervals. Always consult your vehicle's owner's manual for the authoritative schedule.

Lexus New-Vehicle Warranty Coverage

Bumper-to-bumper (basic)

4 yr / 50K mi

Powertrain

6 yr / 70K mi

Hybrid/EV battery

10 yr / 150K mi

Corrosion (rust perforation)

6 yr / unlimited mi

Roadside assistance

4 yr / unlimited mi

Hybrid battery is now 10yr/150K miles for 2020+ hybrids

These are the terms for a new Lexus. If you're buying a used 2018 NX, remaining coverage is usually pro-rated from the vehicle's original in-service date. Not all coverage transfers between owners — check with a Lexus dealer for VIN-specific remaining warranty.

Estimated Repair Costs

FUEL SYSTEM(~50K mi)

$500

ENGINE(~50K mi)

$500

BRAKES(~50K mi)

$500

DRIVER ASSIST/CAMERAS(~50K mi)

$500

STEERING(~50K mi)

$500

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

🔍 Pre-Purchase Inspection Checklist

Based on 23 owner complaints for this specific year, here's what to check or ask about:

☐
FUEL SYSTEM: I was driving on 64 and at a sudden my 2018 NX 300 stopped accelerating and engine was stalled. I was lucky that the highway was not busy, so I was able to park it on the shoulder of HWY and later towed it to my home. The car was not drivable anymore as engine was keep shutting down with the warning
Typically appears around 50K miles. Repair cost ~$500
☐
ENGINE: HVAC Evaporator Drain Hose keeps getting clogged resulting in the overflow of water into the cabin driver side floor. When using the AC or Defroster this could be a quart of water or more which can result in mold/mildew on carpet and pad. Lexus wants $6000 to repair and replace (they will not repair
Typically appears around 50K miles. Repair cost ~$500
☐
BRAKES: The contact owns a 2018 Lexus NX. The contact stated while coasting into the home driveway at 5 MPH without foot-on acceleration, the vehicle automatically accelerated at high speed into the garage. The contact tried to use the brake pedal to stop; however, the brakes were inoperative. The contact h
Typically appears around 50K miles. Repair cost ~$500
☐
DRIVER ASSIST/CAMERAS: After 45 minutes in stop-and-go traffic the brake pedal went to the floor four times, the Brake Override System (BOS) failed, throwing the shifter into Park failed, and we hit the car in front of us. No warning sounds typical for this car sounded and no lights appeared on the dash. Thankfully, we we
Typically appears around 50K miles. Repair cost ~$500
☐
General: Get a pre-purchase inspection from an independent mechanic ($100-$200)