Skip to main content
VinCanary

Reliability report · 2021 Toyota 4Runner · Updated July 2026 · ~$3,650/yr fuel · what it costs to keep →

A quiet, recall-light 4Runner where the only real homework is the highway shimmy and a couple of $200 door-lock actuators.

The 2021 is a mature, quiet fifth-generation 4Runner with the proven 4.0-liter 1GR-FE V6 and A750 five-speed automatic. Its only recall is a regional-distributor load-capacity label tied to a specific accessory wheel, and the 34-complaint file has no catastrophic pattern — this is the durable body-on-frame SUV doing what it's known for.

The homework is small and specific. The generation's steering-wheel shimmy at 55–65 mph is the loudest theme (mostly tires and body-on-frame character). Door-lock actuators fail repeatedly at roughly $200 a piece, with owners citing a class-action. Add the usual sunroof-shatter and soft-brake checks and the salt-belt frame inspection, and you've covered a 2021.

Evidence: 34 NHTSA complaints · 1 recall campaigns · 6 mechanic & forum sources

Canary status

Calm

What that means: 34 federal complaints and a single accessory load-label recall — no national safety recall touches this year. The drivetrain is the same bulletproof 4.0-liter V6 and five-speed automatic, and nothing in the file is an expensive avoidable pattern. The steering shimmy at highway speed leads the complaints, followed by repeat door-lock-actuator failures and the usual sunroof and soft-brake notes.

CalmChirpingSquawkingFainted

34

Federal complaints

1

Recall

Federal crash tests

5-star scale
Overall
Frontal crash
Side crash
Rollover

Tested variant: 2021 Toyota 4RUNNER SUV 2WD (NHTSA VehicleId 15824)

Source: NHTSA New Car Assessment Program (NCAP) →

Known issues

Ranked by the cost of ignoring them. Every claim carries its source.

Highway steering-wheel shimmy at 55–65 mph

moderate

The generation's signature complaint dominates the 2021 file: a steering-wheel shimmy around 55–65 mph, often on trucks with only a few thousand miles, that owners chase through repeated road-force balancing and alignments while dealers call it normal. Toyota's tech tips tie much of it to the factory tires, and mechanics say a body-on-frame truck on aggressive all-terrain tires is inherently prone to it — improved most by better tires and a proper road-force balance. It's a test-drive item, not a broken part or a safety defect. Drive at highway speed before buying.

Road-force balance / better tires

tire-shop pricing

Sources: NHTSA complaint database, 2021 4Runner · NHTSA recalls and manufacturer communications (shimmy/tire tech tips) · Independent mechanic/owner channel transcripts (5th-gen 4Runner, incl. Car Care Nut)

Door-lock actuators fail repeatedlymoderate

A recurring 4Runner annoyance shows up on 2021 cars: door-lock actuators failing one after another — front doors and the liftgate — at roughly a $200 part each, out of warranty once the bumper-to-bumper expires. Owners cite a class-action over the pattern. It's not a safety defect, but it's a nagging, repeating bill. Operate every lock from the fob and the switch before buying.

Sources: NHTSA complaint database, 2021 4Runner · Independent mechanic/owner channel transcripts (5th-gen 4Runner, incl. Car Care Nut)

~$200 each

Door-lock actuator (mechanic-cited part)

Sunroof shatter and soft brakesmoderate

Two generation-wide items in the 2021 file. The sunroof can shatter spontaneously ('sounded like a gunshot,' glass blowing outward) with no recall — comprehensive insurance is the backstop. And the brakes feel soft and nose-dive by design, with real but low-frequency reports of the pedal sinking or briefly losing braking; test braking from 30 mph and watch the pedal hold at a stop. TRD Pro trucks add a cold-weather Fox-shock clunk covered by a Toyota bulletin.

Sources: NHTSA complaint database, 2021 4Runner · Independent mechanic/owner channel transcripts (5th-gen 4Runner, incl. Car Care Nut)

insurance comprehensive typical

Sunroof replacement (glass)

Front-differential needle-bearing groan (4WD trucks)minor

On four-wheel-drive 2021s, a cyclical groan from the front differential heard only in two-wheel drive (gone in four-wheel drive) is a known, inexpensive fix — a front-differential needle bearing with an updated part. A separate rear-differential groan is benign; a master tech says to keep the fluid fresh and drive it. If you hear the front groan, negotiate rather than worry.

Sources: NHTSA complaint database, 2021 4Runner · Independent mechanic/owner channel transcripts (5th-gen 4Runner, incl. Car Care Nut)

not expensive

Front needle-bearing replacement (per mechanic)

Frame and rear-hatch rust — the universal checkmoderate

The generation-wide inspection: salt-belt frames rust, and a rotten frame is a walk-away because replacing it costs more than the truck. The rear hatch rusts under its plastic trim. A 2021 is young, but a northern-climate truck still deserves an underside look before you assume it's clean.

Sources: NHTSA complaint database, 2021 4Runner · Independent mechanic/owner channel transcripts (5th-gen 4Runner, incl. Car Care Nut)

more than the truck is worth

Frame replacement

These transmissions are bulletproof — nothing breaks these — as long as the maintenance is followed.
6 mechanic & owner sources

Open recalls

Free fixes at any Toyota dealer. Run the VIN — “completed” isn’t always completed.

  1. 22V-480Southeast Toyota Distributors: incorrect load-carrying-capacity modification label on 2020–2022 4Runners equipped with dealer-installed 20-inch Black Gunner Wheels (FMVSS 110). Free replacement label.open

What it costs to keep

The purchase price is what you negotiate. These are the numbers you live with afterward — each one sourced, none of them blended into a fake total.

The ownership picture — 2021 4Runner

Four sourced numbers. No fake total.

Fuel

17 MPG combined (16 city / 19 highway) for the RWD, 4.0L on the EPA federal fuel-economy test.

Source: FuelEconomy.gov (EPA) — EPA’s federal fuel-economy test, recomputed with current gas prices. EPA record 42974 (4Runner 2WD).
Other builds EPA lists: 4WD, 4.0L 17 MPG · AWD, 4.0L 17 MPG.

$3,650/yr

at $4.15/gal · 15,000 mi/yr · 55/45 city/hwy · pulled Jul 12, 2026

Crash losses

Insurers lose about 32% less on this vehicle than on the average car. Lower collision losses tend to show up in what you pay for coverage.

Source: HLDI — the insurance industry’s loss-data institute — HLDI collision losses, 2020–22 models, published April 2023 (report R-23). 100 = the all-vehicle average. Series read: Toyota 4Runner 4dr 4WD.
Other series: Toyota 4Runner 4dr 77, where 100 = average.

68 vs 100

32% below average

Theft

Stolen about 58% less often than the average vehicle. One less thing to price into coverage.

Source: HLDI — HLDI whole vehicle theft losses, 2020–22 models, published April 2023 (report WT-22). 100 = the all-vehicle average. Series read: Toyota 4Runner 4dr 4WD.
Other series: Toyota 4Runner 4dr 19, where 100 = average.

42 vs 100

58% below average

Repair risk

What this specific year is known to need. Pulled from the issues above — the repairs owners actually report, at the costs they report them. Averages from other sites blend every year together; these are this year’s own numbers.

Source: this report — 01 Known issues.

Road-force balance / better tirestire-shop pricing
Door-lock actuator (mechanic-cited part)~$200 each
Sunroof replacement (glass)insurance comprehensive typical
Front needle-bearing replacement (per mechanic)not expensive
Frame replacementmore than the truck is worth
Why there’s no single “cost to own” number: sites that promise one are guessing at your insurance quote, your annual miles, and your luck. These are the numbers we can actually source — and each one carries its receipt.

Shopping this year?

Get the printable pre-purchase checklist and an alert if this year’s recall sheet changes.

Form not loading? Open it directly →

Have a specific one in your sights?

The VIN is on the listing. We’ll check this exact car — build, open recalls, and whether the “completed” repairs stayed fixed.

Form not loading? Open it directly →

Before you buy

Print this
  1. 01Drive at 55–65 mph and feel for steering-wheel shimmy; if present, plan on a road-force balance or better tires rather than assuming a broken part.
  2. 02Operate every door lock from the fob and the switch — repeated actuator failures are common and add up out of warranty.
  3. 03Inspect the sunroof glass and ask about any prior glass claims.
  4. 04Test the brakes from 30 mph and confirm the pedal holds firm at a stop.
  5. 05On a four-wheel-drive truck, listen for a front-differential groan in two-wheel drive that clears in four-wheel drive — an inexpensive needle-bearing fix; a TRD Pro's cold Fox-shock clunk is covered by a bulletin.
  6. 06If it lived in a salt-belt state, inspect the frame from underneath and the rear hatch under its plastic trim for rust.
  7. 07The one recall (22V-480) applies only to trucks with the specific dealer-installed Black Gunner wheels — verify by VIN.

Own one already?

The canary watches your VIN — new recalls and the mileage where known issues start.

Watch my VIN — free

vincanary.com/toyota/4runner/2021