definitely annoying
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
34,779 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.

2008 Toyota Sienna engine problems

engine problem

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2008 Toyota Sienna Owner Comments

problem #7

Sep 012015


  • miles


2008 Toyota Sienna. Consumer writes in regards to vehicle engine problems. The consumer stated the air condition was not cooling the vehicle, and she thought it just needed to be serviced. After two hours of driving, the check engine light illuminated. By the time she was able to pull over, the engine was ruined, the dealer stated the engine water hose and oil hose had malfunctioned.

- Tallahassee, FL, USA

problem #6

Mar 042012

Sienna 6-cyl

  • 40,105 miles
The contact owns a 2008 Toyota Sienna. The contact stated that while driving 55 mph, smoke began to emit from the rear. The contact stopped the vehicle and noticed that a high pressure hose under the intake manifold was pierced and leaking oil. The vehicle was towed to an independent repair shop and was in the process of being evaluated. The vehicle was not repaired. The manufacturer was made aware of the failure and offered no assistance. The failure mileage was 40,105. Updated 4/2/12

- Durham, NC, USA

problem #5

Jan 302012

Sienna 6-cyl

  • 98,000 miles
At highway speed, all lights flicker on then lost all power.......oilline had leaked on alternator belt causing loss of power. Luckily power loss prevented engine damage from oil leak. We had not been notified by Toyota about the oil line problem or recall.....only after a local garage fixed the line did I find out about the recall....I would had it replaced earlier if I had been notified.

- Cranberry Twp, PA, USA

problem #4

Sep 272011


  • 60,600 miles


The contact owns a 2008 Toyota Sienna. While driving 65 mph, the contact stated that thea push rod fractured causing a hole in the engine. The vehicle was towed to the dealer where he was informed to replace the engine. The manufacturer was aware of the failure. The current and failure mileage was 60,600. No repairs were performed.

- Summerville, SC, USA

problem #3

Jul 292011


  • 34,680 miles
The contact owns a 2008 Toyota Sienna. While driving approximately 65 mph, the engine stalled with the illumination of the entire instrument panel. The vehicle failed to restart and was towed to an authorized dealer for diagnostic testing. The technician was unable to detect a trouble code. The malfunction occurred six times on the same day. The engine restarted each time the failure occurred and the vehicle was taken to a different dealer who could not locate a problem. The contact planned to take the vehicle for a third opinion to possibly locate the consistent failure. The manufacturer was notified of the problem. The approximate failure mileage was 34,680.

- New York, NY, USA

problem #2

Jun 012010


  • 10,000 miles
Early am on 6/1/10 I was driving to my cabin in the country and heard a soft popping sound, stopped my car and smoke began flowing out all opening around the hood, when I looked under the car I saw fire falling to the road. I went to the passenger side and opened the door only to find that area filled with toxic fumes, shutting the door I realized all was hopeless except to get away from the vehicle. Within seconds my car was engulfed in flames. I ran as fast as I could to get help. Had I been less alert, inactive, less proactive I would have probably died. The car was purchased new in Nov, 2008 and had a little over 10,000 miles. There was no smell of fuel or another strange odor. The car was burned totally, with nothing remaining except the steel frame.

- Paso Robles, CA, USA

problem #1

Aug 292008

Sienna 6-cyl

  • 67 miles
Piston slap on Toyota 3.5 L V6 since new. Very loud when cold in cooler temperatures..ca arbitrator agrees with Toyota that this is normal for this engine. I cannot sell this car with this noise but Toyota doesn't care. Toyota has had a few complaints but no failures yet. Piston slap wears the piston prematurely and could in my opinion lead to failure. This is my 2nd complaint to you people for the same issue.

- Chico, CA, USA

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