fairly significant
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
16,000 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 Volvo S40 engine problems

engine problem

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2004 Volvo S40 Owner Comments

problem #3

Dec 122009


  • 48,000 miles


The contact owns a 2004 Volvo S40. While driving 50 mph the check engine light illuminated on the instrument control panel, and then the vehicle stalled. After a period of waiting she was able to restart the vehicle. The Volvo manufacturer was notified, but no assistance was provided. The failure mileage was 48,000.

- Brooklyn, NY, USA

problem #2

Aug 192005


  • Automatic transmission
  • miles
The engine dies intermittently once every six months. This normally happens when making a right turn or slowing down. All of the warning lights in the dashboard light up. The gear must be put back in park, must turn off the ignition and then re-start again. The first time it happened, I thought it might have been a fluke, the second time I took it in they changed a valve in the engine, the third time they kept the car for 2 weeks and they changed the air compressor and positive/negative battery cables (they had a Volvo of North America technician come down). The last time it happened was Friday, August 19, 2005. I've called the dealership and they don't seem to want to take my call.

- Irvine, CA, USA

problem #1

Sep 182004


  • miles
Multiple failures. Air bag system, problem starting and noise in steering. The vehicle also had an air condition problem. The air bag light illuminated on 3 occasions. The consumer stated the passenger seat was equipped with a device that weighed passengers to determine if the air bag should be activated.

- Charlotte, NC, USA

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