Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
21,803 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 Mitsubishi Lancer engine problems

engine problem

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2004 Mitsubishi Lancer Owner Comments

problem #5

Jun 152011

Lancer 4-cyl

  • miles


This car keeps idling high when it either gets warm out or if I have been driving for a while. I have looked online and read numerous complaints on this for the same make and model. Extremely frustrated that no one seems to think this should be recalled my teenage daughter cannot even drive my car because she almost crashed. Every summer I worry about being at a stop sign and while my foot is on the break the car is trying to drive. There is something obviously wrong with this make and model. If you google it many people with this same complaint come up asking for help.

- New Beford, MA, USA

problem #4

Aug 152005


  • Manual transmission
  • 34,000 miles
: the contact stated while driving 55 mph, the vehicle's app sensor went out, which caused the vehicle to decelerate rapidly and not rev past 2500 rpms. The service department was contacted but could not find the cause of the problem. The app sensor was replaced 5 times. The contact had repair invoices available upon request. Updated 10/25/2006 - the brake light indicator on the dash remained on at all times. The dealer replaced the alternator. The ses light illuminated intermittently and the vehicle lacked power. The clutch slipped at time. The dealer replaced the clutch disc.

- Alamosa, CO, USA

problem #3

May 312006


  • Manual transmission
  • 30,708 miles
Whenever driving, my vehicle suddenly stops accelerating over 2500 RPM's. when on the highway, it causes my car to drastically slow down, and I am forced to quickly move to the side of the road to avoid a collision. Dealer has replaced the app sensor on the vehicle twice already within several months, and is currently replacing it a third time. Very dangerous when on the highway.

- Parker, CO, USA

problem #2

Dec 182005

Lancer 4-cyl

  • 44,309 miles
While driving on a local freeway at posted speed, I was approaching a off-ramp and applied a gently push on the brake to transition to the off-ramp. All of the sudden the vehicle accelerator increased its pressure and started to increase the speed of travel. I then attempted to tap on the brake more vigurously with no success. Next attempt was to tap on the accelerator to clear it from being stuck, next I moved the floor mat thinking it might have caught up under the pedal at which point the vehicle continued to accelerate. I had to move the automatic shifter from drive to neutral and back into drive while still applying the brake and then I tapped the throttle pedal a few more times at which point finally cleared the problem and the vehicle performed as normal. Service is being scheduled for this problem.

- Maricopa, AZ, USA

problem #1

Aug 162005

Lancer 4-cyl

  • Automatic transmission
  • miles
I was approaching a street intersection, applying normal braking for a routine stop. When I was about 200 feet from the intersection, the engine accelerated for about two seconds and I had to greatly increase brake pressure to slow the car down.

- Rochester, MN, USA

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