3.7

definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
34,000 miles

About These NHTSA Complaints:

The NHTSA is the US gov't agency tasked with vehicle safety. Complaints can be spread across multiple & redundant categories, & are not organized by problem. See the Back button — blue bar at the very top of the page — to explore more.

Get notified about new defects, investigations, recalls & lawsuits for the 2004 Toyota Prius:

Unsubscribe any time. We don't sell/share your email.

problem #2

Nov 012009

Prius 4-cyl

  • 68,000 miles
About 40% of the time, my Toyota Prius doesn't want to stop or slow down when the brakes are applied. Under these conditions, I have to apply the brakes hard and then the car will slow down. It feels like the car wants to "run away" when the brakes are applied. It exhibits this behavior in many circumstances: Stopping at a stop light, slowing down on an expressway, or slowing down on a city street. Updated 11/23/09 the check engine light illuminated. The passenger front window switch wasn't opening or closing the window unless the master switch was used. The throttle body had to be cleaned. The fan belt and brake light switch were replaced. Updated 11/24/09 updated 01/06/10 updated 01/07/10.

- Miami Beach, FL, USA

Add Complaint
problem #1

Apr 052007

Prius 4-cyl

  • miles
With light braking I can stop my 2004 Prius without ever illuminating the brake lights. This risks a rear end collision. The lights illuminate after the brake pedal has been depressed a little more than 1/2 inch. The service manager at my dealership claimed that there was no adjustment and would not take the car into the shop. An incident date, as required on this form, is not applicable. This is happening every time I brake.

- Denver, CO, USA

Add Complaint