NHTSA — Engine And Engine Cooling Problems


definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
27,303 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.

2006 Scion tC engine problems

engine problem

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2006 Scion tC Owner Comments

problem #3

Sep 282012


  • 81,910 miles


Head gasket leaking found 6 head bolts loose. Installed new head gasket set, new intake manifold. Paid 2000 dollars for repairs, now having problem with the engine. Makes loud noise and overheats. Mechanic and bar agent advised it was a manufacturing problem. Headbolts came loose again and now I need new engine. Previous to this my insurance had paid a total of 5000 dollars for some mechanical and body work. I have been without a vehicle for almost seven months now. Called Toyota manufacture company they told me the only way they would inspect the vehicle would be if they charged me. I do not have the money to afford the repair again and to buy a new engine. I just need it to be inspected especially since I had a government official from the bureau of auto repair confirm that there was a manufacturing defect.

- Los Angeles, CA, USA

problem #2

Nov 262011

tC 4-cyl

  • miles
The engine cover is cracked, this cover has never been removed for any type of repair. Wondering if the heat of the engine caused it to crack.

- Buford, GA, USA

problem #1

Sep 282011


  • miles
Took my car to the shop for regular maintenance and found out that my car was leaking coolant out of three head bolts on back of engine block. They were stripped out because of Toyota improper design of the block. 4 1/2" hole with 4" bolt with only the bottom 1 1/2" threaded which is only an inch to inch thread. Pour design for an aluminum block for that tensile strength. Its an 06 Scion Tc they wanted 6000 to replace block. Even called corporate but they wouldn't do anything about it since its outside of powertrain warranty when they know its a known issue. They even issued a tsb out in 3/2/2011. Something needs to be done I have seen many cases on this issue and Toyota is not willing to do anything about their problem and their pour designs. Service bulletin: S-sb-0004-11.

- Chattanooga, TN, USA

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