Toyota 4Runner (2003–2009): what actually fails

The documented failure patterns on used Toyota 4Runners — the mileage window where each shows up, and what the repair typically costs at an independent shop. This is the same data NoLemon's Brief checks against every VIN.

2003–2009 TYPICAL 60k–200k MI $4,000–$12,000

Frame rust-through

Fourth-gen 4Runner frames rust badly in snow-belt states, and unlike the Tacoma there was never a replacement program. A pre-purchase lift inspection of the frame is mandatory on any rust-belt example. Perforation or flaking rails means walk away — a frame swap costs more than many of these are worth.

BEFORE YOU BUY
Ask for repair records covering this item. If it hasn't been addressed and the car is in or near the mileage window, price the $4,000–$12,000 repair into your offer — or make it the seller's problem.

Buying a used 4Runner?

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Toyota 4Runner (2003–2009): what actually fails

Frame rust-through

Buying a used 4Runner?

More known problems by model