5.0

fairly significant
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
20,000 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.

2011 Toyota Prius cooling system problems

cooling system problem

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2011 Toyota Prius Owner Comments

problem #1

Jul 172013

Prius 4-cyl

  • 20,000 miles

A D V E R T I S E M E N T S

The air conditioning system in the Prius is defective. It is prone to growing mildew and/or mold in the system, which results in toxic air being pumped into the car. I have reported the problem to my local Toyota dealerships several times, and they have been unable to fix the problem. There is a large body of information about the mildew problem online which seems to indicate that this is a common problem among Prius from 2010 to the present. Since noticing the mildew smell in my car, I have had severe allergy problems. This is a serious safety concern that is adversely affecting my health, and given its prevalence among cars of this make and model, I believe Toyota should have to address this problem immediately. The air conditioning system flush does not fix the problem, and in fact may have made it worse.

- Arlington, VA, USA

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