Notes: Although it has a stellar record in terms of vehicle problems, initially the 4th generation (2003 - 2009) 4Runner didn't earn our top "Seal of Awesome" rating because it received poor crash test ratings for rear impacts. However it's proven to have one of the lowest driver death rates out of all vehicles (not just SUVs), so we've bumped it back up to our top award.


pretty bad
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
3,452 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2007 Toyota 4Runner exhaust system problems

exhaust system problem

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2007 Toyota 4Runner Owner Comments

problem #4

Jan 012008


  • 13,000 miles


Vehicle gives off horrible sulfur smell when accelerating quickly and sometimes even when slowly gaining speed after stop and go traffic on a highway. The dealership where I took it said that this is a known problem and there isn't anything they can do about it. Why do other vehicle's I own not do the same thing with the same gas?

- Edmond, OK, USA

problem #3

Jun 142007


  • miles
Strong sulfur smell when under acceleration.

- Diamond Bar, CA, USA

problem #2

Apr 102007

4Runner 6-cyl

  • Automatic transmission
  • 750 miles
Excessive sulfur/ammonia smell in the cabin during heavy acceleration. Reported issue to Toyota dealer (puente hills Toyota) during service. Dealer stated no tsb's issued for this problem yet, however, stated that this is a known problem with earlier models of Toyota 4 runners. Since Toyota had yet to issue a tsb for this model year, they could not do anything about it.

- Diamond Bar, CA, USA

problem #1

Oct 112007

4Runner 4WD 6-cyl

  • Automatic transmission
  • 60 miles
When accelerating anything over babying it the vehicle's exhaust emits a strong sulfur (rotten eggs) odor. Whether the windows are up or down the vehicle is filled with the awful stench. With the windows down it is a much stronger unpleasant odor. P.S. the incident date that I first noticed this was 10 - 11 - 2008, but it will only let me go up to 2007 on the selection. I purchased the vehicle the day before. The vehicle is also a 2008 model, which is also not an option to select.

- North Tonawanda, NY, USA

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