Is the 2020 Lexus IS reliable?

The 2020 Lexus IS has 7 complaints filed with NHTSA (0.5x the segment average). Our reliability verdict: excellent. Most common issue: ENGINE problems.

What are common problems with the 2020 Lexus IS?

Top problems: ENGINE (2 complaints, avg repair $500); FUEL SYSTEM (2 complaints, avg repair $500); SUSPENSION (1 complaints, avg repair $500). Issues typically appear around 50K miles.

Are there any recalls on the 2020 Lexus IS?

No recalls have been issued for the 2020 Lexus IS.

How much does it cost to fuel a 2020 Lexus IS?

The 2020 Lexus IS gets 24 MPG combined. At current US average gas prices, driving 12,000 miles per year costs roughly $2000. See the interactive fuel cost calculator on this page for state-specific pricing.

How much does it cost to insure a 2020 Lexus IS?

Estimated US average full-coverage insurance for the 2020 Lexus IS is approximately $2,143/year (sedan-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.

2020 Lexus IS

Problems, Recalls & Reliability Report

Excellent Reliability

Quick Summary

The 2020 Lexus IS has 7 owner complaints filed with NHTSA — that's 0.5x the segment average of 14. The most common issue is engine problems (29% of all complaints), specifically: this vehicle has a recurring, safety-critical defect involving intermittent engine misfires, flashing mils, reduced engine power, sudden loss of acceleration, and noticeable engine shaking. despite multiple repair attempts and extended diagnostics by a dealership, with manufacturer technical assista.

Total Complaints

Recalls Issued

—/5

Safety Stars

0.5x

vs Segment Avg

Known Problems(top 5 of 5)

ENGINE

2 complaints

29%

• This vehicle has a recurring, safety-critical defect involving intermittent engine misfires, flashing MILs, reduced engine power, sudden loss of acceleration, and noticeable engine shaking. Despite multiple repair attempts and extended diagnostics by a dealership, with manufacturer technical assista
• I am filing this updated complaint to supplement my prior complaint (NHTSA ID No. XXX, filed January 27, 2026) regarding a recurring, safety-critical engine defect in my 2020 Lexus IS300 RWD, 8AR-FTS engine. DEFECT: Three documented misfire events over seven weeks. The second (12/11/2025) and third

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

“This vehicle has a recurring, safety-critical defect involving intermittent engine misfires, flashing MILs, reduced engine power, sudden loss of acceleration, and noticeable engine shaking. Despite multiple repair attempts and extended diagnostics by a dealership, with manufacturer technical assista”

— NHTSA complaint filing

Fuel Cost Calculator for 2020 Lexus IS

Live EIA prices

Annual miles driven: 12,000

Your state (affects local gasoline price)

Per year

$2,001

Per month

$167

Per mile

16.7¢

MPG

City driving (worst-case MPG)

$2,286/yr

Highway driving (best-case MPG)

$1,600/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 2020 Lexus IS

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

$2,143

Full coverage / month

$179

Liability only / year

$710

vs US avg

+28%

How this estimate is calculated

US base full-coverage premium$1674

× state (US)1.00x

× vehicle class (sedan-luxury)1.28x

× theft risk1.00x

× safety rating1.00x

× vehicle age1.00x

= Full coverage estimate$2143

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

Maintenance & Warranty

Recommended Lexus IS 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 2020 IS, 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

ENGINE(~50K mi)

$500

FUEL SYSTEM(~50K mi)

$500

SUSPENSION(~50K mi)

$500

TRANSMISSION(~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 7 owner complaints for this specific year, here's what to check or ask about:

☐
ENGINE: This vehicle has a recurring, safety-critical defect involving intermittent engine misfires, flashing MILs, reduced engine power, sudden loss of acceleration, and noticeable engine shaking. Despite multiple repair attempts and extended diagnostics by a dealership, with manufacturer technical assista
Typically appears around 50K miles. Repair cost ~$500
☐
FUEL SYSTEM: This vehicle has a recurring, safety-critical defect involving intermittent engine misfires, flashing MILs, reduced engine power, sudden loss of acceleration, and noticeable engine shaking. Despite multiple repair attempts and extended diagnostics by a dealership, with manufacturer technical assista
Typically appears around 50K miles. Repair cost ~$500
☐
SUSPENSION: Front Suspension (shock Absorber) uneven wear and bouncy, some vibration on the steering wheel at about 30k miles, on highway exit round about circle, the vehicle swerves left or right. very unsafe. long story short, drop it off at the dealership Lexus of Pembroke Pines FL, they said the issue was m
Typically appears around 50K miles. Repair cost ~$500
☐
TRANSMISSION: I am filing this updated complaint to supplement my prior complaint (NHTSA ID No. XXX, filed January 27, 2026) regarding a recurring, safety-critical engine defect in my 2020 Lexus IS300 RWD, 8AR-FTS engine. DEFECT: Three documented misfire events over seven weeks. The second (12/11/2025) and third
Typically appears around 50K miles. Repair cost ~$500
☐
General: Get a pre-purchase inspection from an independent mechanic ($100-$200)