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Toyota Prius Engine Problems and Repair Histories

2001 TrueDelta members own a 2000 or newer Toyota Prius. 353 of these members (17.6%) have reported engine repairs for their car. A total of 325 engine repairs to Toyota Prii--an average of 0.2 per vehicle--have been reported.

See our lemon odds and nada odds page for more details. To see how frequently Toyota Prius problems occur, check out our car reliability stats.

Want to read about specific problems behind these stats? Jump to the Toyota Prius problem descriptions below.

Don't infer Toyota Prius problem frequency from what you see on this page. Many lucky owners have had no repairs, and their cars are not shown.

Percentage of Toyota Prius repairs by problem area

26% of the Toyota Prius repairs were to the engine, 2% to the transmission, 9% to the brakes, 10% to the suspension, 37% to the electrical or air-conditioning systems, 9% to the body and trim, and 7% to other areas of the vehicle.

Chart based on 1239 repairs.

Toyota Prius engine repair cost distribution

Of the Toyota Prius engine repairs that were not covered by warranty and were not do-it-yourself repairs, 21% cost less than $100, 49% between $100 and $499, 18% between $500 and $999, 6% between $1000 and $2499, and 7% more than $2500.

Chart based on 261 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
Non-members can see only ten Toyota Prius Engine problems and repair histories. Log in or join us to see them all.
Repair costs are in local units.

2007 Toyota Prius 4dr Hatch

76-horsepower 1.5L I4 Hybrid CVT FWD

Toyota Prius in Texas, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Aug 2007 5000    
17000 0 Electric motor in Hybrid system seems weak. Less resistance than when new, lower gas mileage than when new. 
 
Toyota Prius in Idaho, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Apr 2008 5000    
5000 0 Car died. Towed to dealer. They said originally battery defective under warranty plus bad fusible link. Later said inverter bad therefore nothing covered under warranty. Want $5500 plus tax to repair. Asked why no warranty. Answer nothing defective. 
5000 3400 Car died. Battery determined defective. Also found a fuse and inverter bad. Only battery and tow covered under warranty. Owner paid the rest. 
 
Toyota Prius in Indiana, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Oct 2006 0    
26000 0 Coolant pump sounding noisy. Replaced pump under warranty. 
112000  

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2006 Toyota Prius 4dr Hatch

76-horsepower 1.5L I4 Hybrid CVT FWD

Toyota Prius in New Hampshire, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Jun 2006 2000    
5000 50 Tire press. light came on while driving, stopped and put air in and tried to reset but the light did not go off. More user error- I didn't hold the set button down long enough and they put in a little more air. 
52000  
Toyota Prius in New Mexico, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Dec 2006 18000    
36000 0 Coolant transfer pump made high pitched whine on start-up and shut-down, especially in cold weather. Pump replaced under warranty. 
121000 315 Weeping engine coolant pump replaced. 
135000 850 Replaced HV battery due to reduced battery capacity resulting in poor climbing performance. 
180000  

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2006 Toyota Prius 4-door

4-cylinder hybrid CVT 2WD

Toyota Prius in Illinois, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Jul 2006 6000    
41000 0 Noisy coolant recirculating pump. Installed parts. 
 

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2005 Toyota Prius 4dr Hatch

76-horsepower 1.5L I4 Hybrid CVT FWD

Toyota Prius in Minnesota, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Jul 2008 82000    
85000 240 Thermostat replacement. 
 

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2004 Toyota Prius 4dr Hatch

76-horsepower 1.5L I4 Hybrid CVT FWD

Toyota Prius in Kansas, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
May 2008 111000    
112000 239 Repaired in June. Car died on road. Wichita Toyota dealership replaced a fuse to repair,charged $240 service advisor lied as to which fuse I later found out. Replaced faulty cooling pump myself. 
238000  
Toyota Prius in Arizona, United States
Date Odometer
(in miles)
Cost Problem/Repair Description
Oct 2006 35000    
45000 0 Inverter Water Pump. Car not driveable. Parts had to be ordered. Took 2 days for parts to arrive and 1 day to install. 
106000 400 Gas engine water pump was considered leaking by the dealer. Not noticed by owner. 
110700 346 Water pump and thermostat had to be replaced 
115000  
Toyota Prius in Ontario, Canada
Date Odometer
(in miles)
Cost Problem/Repair Description
Oct 2006 37200    
57040 44 Check engine code P0138 post-catalytic converter O2 sensor. Part ordered. 
58900 400 Dealer replaced O2 sensor, but check engine light still came on. I then purchased a ScanGauge for $170 to clear and diagnose the problem. 
61380 366 Check Engine light P0031 fixed by replacing air-fuel ratio sensor. I purchased the replacement sensor over the Internet since dealer price was high. 
116560 730 Replaced oxygen and air/fuel sensors to clear check engine light.  Also replaced a leaking exhaust gasket. Dealer also replaced inverter cooling pump at no cost (recall). Replaced brake fluid (maintenance item). 
140720 350 Replaced stainless steel muffler since it had developed a hole. 
153140  

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