NHTSA — Engine And Engine Cooling: Exhaust System Problems

CarComplaints.com Seal Of This Might Hurt

CarComplaints.com Notes: Unfortunately the 2007 Pontiac G6 continues a serious trend of steering problems from the prior model year.


definitely annoying
Crashes / Fires:
0 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
30,450 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.

2007 Pontiac G6 exhaust system problems

exhaust system problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2007 Pontiac G6:

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

2007 Pontiac G6 Owner Comments

problem #2

Mar 012009

G6 6-cyl

  • 52,000 miles


2007 Pontiac G6 GT convertible 3.9 V6 malfunction of exhaust system behind the catalytic converters causes a loud whistle at 2-3K RPM and reduction in performance and fuel efficiency. This is a known issue and reported on the internet with this particular sport exhaust on this model and engine. It begins at approximately 50K miles. The GM dealer nor Pontiac will address and fix. Cost of repair to consumer, $1500. Only solution is to replace exhaust assembly from the flex pipe back.

- Sunland, CA, USA

problem #1

Dec 042008


  • 8,900 miles
Dropped my car off for service at the dealership and they later called to say the engine had caught fire when they were test driving the car. An inspector from the insurors service bureau determined that a "rodent infestation" was the cause and that a nest had been built in the exhaust header. I have since seen several other owners reporting fires in the engine compartment and believe there might be a design defect that allows animals access to an internal location where engine heat ignites their nesting material.

- Smithfield, RI, USA

Not what you are looking for?