pretty bad
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
4,036 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.

2004 Toyota Sienna fuel system problems

fuel system problem

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2004 Toyota Sienna Owner Comments

problem #4

Jul 152006


  • miles


2004 Sienna - manufactured 03" July 14th drove from ca to AZ - 5 kids and my brother sat. After driving ~ 2 hours stopped for gas. Filled tank. A few minutes later, the car suddenly lost power & proceeded to slow down very quickly. We quickly pulled to the side. He opened the hood, looked & crawled under car. Quickly crawled back with parts of his T-shirt, his face and one arm covered with gas. He said fuel line was loose and line was close to exhaust, danger of fire or possible explosion. Had some tools in the car. My description of what he did --> tried to force the connection back together. Service person at dealership had no explanation why the fuel line would have come off. There were no accidents/ rocks/ or unusual circumstances. The only facts that I know of that may have played a role is - we had been driving in ~110 weather and then filled the tank - pressure build forced the connection loose ? had my brother not been there, I would have tried to start the car - with the very hot exhaust line / " possible major fire or explosion. Replacing an apparently ok fuel line with new of the same make & model concerns me. Toyota should investigate the root cause and find out if part was faulty. This problem can come up again at any time anywhere... can you recommend a course of action. Do you have any power over Toyota service - can they for example use additional clamps etc... this is a major safety issue - we could have been dead. This is not similar to a radiator cap where the faulty part can cause damage to the car... this can actually kill people without warning. I have asked the service person to keep the old part - can you request that Toyota or other unbiased agencies investigate the cause of this problem. There are several references on internet about Sienna damaged or faulty fuel tank.. the sites are blocked so I can not read details.

- Mission Viejo, CA, USA

problem #3

Jun 232006


  • miles
Our 2004 Toyota Sienna suddenly stopped and lost power. Fuel started leaking underneath the car. The fire department arrived and said a fuel hose had come undone. I took the car to springfield Toyota and they said it might be related to a previous recall on fuel tank replacement. They did not know if a tsb was out on this. A very unsafe potential. Toyota replace the fuel line and replaced a cracked clip.

- Lorton, VA, USA

problem #2

May 062004

Sienna 6-cyl

  • Automatic transmission
  • 11,442 miles
Consumer received recall 03V291000 concerning fuel tank. The fuel tank was replaced due to faulty construction. Recall repairs were performed, and the quick disconnect section came apart in the consumer's driveway. Dealer examined the vehicle, and simply reconnected the quick connect section. The fuel line became disconnected causing fuel to leak near the exhaust and the engine to fail.

- East China, MI, USA

problem #1

Apr 012004

(reported on)


  • Automatic transmission
  • 4,700 miles
Consumer complained about a gas line problem. While driving at 40 mph vehicle stalled. Consumer went to restart the engine and gas line was pumping gas all over the ground. The gas line was loose, it was put back together, but problem recurred.

- Lake Wales, FL, USA

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