What are the most common Toyota Corolla problems?

According to Au7o's analysis of 1,245+ owner reports, the 2020-2020 Toyota Corolla has 2 documented issues. The most frequently reported are: Coolant Bypass Valve Failure, Fuel Pump Impeller Deformation. Of these, 2 are rated critical and should be addressed promptly.

Is the Toyota Corolla reliable?

The 2020-2020 Toyota Corolla has 2 known issues documented across 1,245+ owner reports. 2 issues are rated critical: Coolant Bypass Valve Failure and Fuel Pump Impeller Deformation. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Toyota Corolla problems?

Repair costs for known Toyota Corolla issues range from $0 to $900, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Coolant Bypass Valve Failure, typically costs $700-$900 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

2020 Toyota Corolla Problems: 2 Issues Every Owner Should Know

2020 Toyota Corolla Problems: 2 Issues Every Owner Should Know | Au7o

All 2 Known Issues

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Community Reported

678 owners

On the 2019-2023 Toyota Corolla, the coolant bypass valve in 2019-2023 Corollas can crack and fail prematurely, causing coolant leaks and triggering an 'Engine Maintenance Required - Visit Your Dealer' warning message on the dashboard. This defect is the subject of a class action lawsuit and affects both Corolla and RAV4 models. The valve typically fails between 30,000-70,000 miles.

This issue also affects: Volkswagen Eurovan, Audi A4 allroad, Audi A7

Common Symptoms

Engine Maintenance Required warning message on dashboard
Coolant leak visible under vehicle
Low coolant warning light
Potential engine overheating if not addressed

How to Fix

Replace the coolant bypass valve with updated part. Check if vehicle qualifies for Customer Support Program coverage.

What Owners Are Using

Parts and tips from 678+ owners who fixed this issue

TipCheck if your vehicle qualifies for Toyota's Customer Support Program for free repairs
UpgradeGates coolant hose — OEM-grade reinforced rubber (Gates Coolant Hose)
View on Amazon
UpgradePrestone 50/50 pre-mixed coolant — compatible with all colors (Prestone Coolant Antifreeze 50/50)
View on Amazon

Typical repair cost:$700 - $900

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678+ owners have reported this issue

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Community Reported

High Confidence678 reportsLast reported by owners Feb 2024Reviewed Feb 2026

Community Reported

567 owners

On the 2018-2020 Toyota Corolla, certain 2018-2020 Corollas have a low-pressure fuel pump with an impeller that can deform due to excessive fuel absorption. This can cause reduced fuel delivery, engine hesitation, and in worst cases, engine stalling while driving - creating a significant crash risk. This is a safety recall affecting multiple Toyota models.

This issue also affects: Chevrolet Silverado 2500HD, Jeep Grand Wagoneer, Lexus IS

Common Symptoms

Engine hesitation or loss of power during acceleration
Engine stalling while driving
Difficulty starting the vehicle
Check engine light illumination

How to Fix

Replace fuel pump assembly with improved part (covered under recall).

What Owners Are Using

Parts and tips from 567+ owners who fixed this issue

NoteThis is a high-severity issue - ignoring it can lead to costly repairs or safety concerns. Address it promptly.
TipGet a proper diagnosis before replacing parts - similar symptoms can have different causes
TipSearch Toyota Corolla forums and owner groups for real-world experiences and DIY guides
TipGet multiple quotes from independent mechanics - dealer prices can be 2-3x higher for the same repair
UpgradeDelphi fuel pump module — OE-quality direct replacement (Delphi Fuel Pump Module)
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UpgradeBosch fuel pump — reliable OEM alternative (Bosch Fuel Pump)
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Typical repair cost:$0 - $0

Research This Issue

567+ owners have reported this issue

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Community Reported

High Confidence567 reportsLast reported by owners Feb 2024Reviewed Feb 2026

⚠️NHTSA Recalls11 recalls

STEERING:COLUMN

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2023 Corolla, Corolla Cross, Corolla Cross Hybrid, Highlander, Highlander Hybrid, Tacoma, 2023 Lexus RX350, RX350 Hybrid, RX500 Hybrid, 2023-2024 Lexus NX250, NX350, and NX350 Hybrid vehicles. An electrical connection inside the steering column's spiral cable assembly may be insufficiently welded, causing the connection to separate and deactivate the driver's air bag. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."

Campaign #23V48000012/07/2023

STEERING

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2023-2024 Corolla and Corolla Hybrid vehicles. Due to cracks developed during the manufacturing process, the steering intermediate shaft assembly may fracture and possibly result in the shaft detaching from the steering column.

Campaign #24V87800021/11/2024

STEERING:COLUMN

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2023 Toyota Corolla, Corolla Cross, Corolla Cross Hybrid, Highlander, Highlander Hybrid, Tacoma, Lexus RX350, 2023-2024 NX250, and NX350 vehicles that may have been incorrectly repaired under previous NHTSA recall number 23V-480. An electrical connection inside the steering column's spiral cable assembly may be insufficiently welded, causing the connection to separate and deactivate the driver's air bag. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."

Campaign #25V04000029/01/2025

AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2020-2021 Avalon, Avalon Hybrid, Corolla, Highlander, Highlander Hybrid, RAV4, RAV4 Hybrid, Lexus ES350, Lexus RX350, Lexus RX450H, 2021 Sienna Hybrid, Lexus ES250, 2020-2022 Camry, Camry Hybrid, and ES300H vehicles. A short circuit may develop in the Occupant Classification System (OCS) sensor, preventing the front passenger air bag from deploying.

Campaign #23V86500020/12/2023

FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2018-2019 4Runner, 2019-2020 Avalon, 2019 Corolla Hatchback, 2017-2019 Highlander, 2018-2020 Camry, 2020 Corolla, 2018-2019 Land Cruiser, 2017-2020 Tacoma, 2019-2020 RAV4, 2019-2020 Sequoia, 2017-2020 Sienna, 2019-2020 Tundra, 2018-2020 Lexus ES350, 2017 Lexus GS200t, 2017-2019 Lexus GS350, 2019 Lexus GS300, 2018-2020 Lexus LC500h, 2019-2020 Lexus LS500, 2018-2019 Lexus GX460, 2017 Lexus IS200t, 2019 Lexus IS300, 2019 Lexus IS350, 2018-2020 Lexus LC500, 2018 Lexus LS500, 2019 Lexus LS500h, 2018-2019 Lexus LX570, 2017 Lexus RC200t, 2019 Lexus RC300, RC350, 2017 and 2019-2020 Lexus RX350, 2018-2020 RX350L, 2019 Lexus UX200, 2018-2019 Lexus NX300 vehicles. The low-pressure fuel pump inside the fuel tank may fail.

Campaign #20V68200004/11/2020

+ 6 more recalls. Check all on NHTSA.gov

Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

2020 Toyota Corolla Problems: 2 Issues Every Owner Should Know

All 2 Known Issues

2019-2023 Toyota Corolla: Coolant Bypass Valve Failure#

Common Symptoms

How to Fix

What Owners Are Using

Research This Issue

2018-2020 Toyota Corolla: Fuel Pump Impeller Deformation#

Common Symptoms

How to Fix

What Owners Are Using

Research This Issue

Other Toyota Models

Frequently Asked Questions

What are the most common Toyota Corolla problems?

Is the Toyota Corolla reliable?

How much does it cost to fix common Toyota Corolla problems?

What is the 2019-2023 Toyota Corolla Coolant Bypass Valve Failure?

What is the 2018-2020 Toyota Corolla Fuel Pump Impeller Deformation?