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2012 Toyota Prius: engine and transmission complaints

NO ELEVATED SIGNAL
18%
111 of 606 relevant owner complaints are about the engine, transmission or fuel system

No elevated drivetrain complaint concentration in the available NHTSA records for the 2012 Toyota Prius. Engine, transmission and fuel system account for 18% of relevant complaints.

Better than 89% of the 1,230 model years we track (2010–2023).

Excludes 91 airbag, lighting and seat-belt recall complaints that would otherwise mask the signal (unadjusted: 16%).

NHTSA data checked September 13, 2026
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Drivetrain complaints
111
engine, transmission, fuel
Total complaints
697
this model year
Fires reported
5
owner-reported
Recall campaigns
8
73 crashes · 51 injuries

Complaints by component

SERVICE BRAKES352 · 51%
ELECTRICAL SYSTEM89 · 13%
ENGINE72 · 10%
UNKNOWN OR OTHER54 · 8%
AIR BAGS43 · 6%
EXTERIOR LIGHTING42 · 6%

The years either side

2010
11%
278 of 2,821
2011
17%
71 of 518
2012
18%
111 of 697
2013
18%
95 of 589
2014
20%
58 of 320
2015
18%
34 of 205
2016
19%
31 of 182
2017
25%
33 of 147
2018
28%
13 of 58
2019
21%
7 of 38
2020
19%
5 of 30
2021
too few complaints
2022
21%
6 of 32
2023
too few complaints

Manufacturers fix things mid-generation. A bad year next to a clean one is common; the fix usually arrived in between.

What owners reported

POWER TRAIN01/13/2015CRASH1 INJURED
TL* THE CONTACT OWNS A 2012 TOYOTA PRIUS. THE CONTACT STATED THAT AFTER THE VEHICLE WAS PARKED, IT ROLLED AWAY IN REVERSE INDEPENDENTLY. AS A RESULT, THE VEHICLE ROLLED OVER THE CONTACT'S LEG AND CRASHED INTO A BUILDING. THE AIR BAGS FAILED TO DEPLOY. THE CONTACT SUSTAINED A BROKEN LEG, A FRACTURED KNEE THAT REQUIRED M…
POWER TRAIN06/13/20141 INJURED
TL* THE CONTACT OWNS A 2012 TOYOTA PRIUS. THE CONTACT STATED THAT AFTER THE VEHICLE WAS PARKED IN A RESIDENTIAL GARAGE, IT STARTED TO ROLL AWAY IN REVERSE INDEPENDENTLY. THE CONTACT STATED THAT THE VEHICLE ROLLED ALL THE WAY INTO THE STREET KNOCKING HER DOWN TO THE GROUND AND INTO A MAIL BOX. THE CONTACT SUSTAINED A L…
VEHICLE SPEED CONTROL,WHEELS,ENGINE07/06/2026
Unknown. There were a multitude of codes that appeared on the diagnostics causing problems with engine. The temperature, brake, tire sensor lights are all on. The cruise control is not working. White smoke emitting from tail pipe and engine. Main engine coolant leaking. Car overheating rapidly.

Three of 111 drivetrain complaints. The full report shows more, with quotes about the engine in the car you are looking at first.

Recall campaigns on this model year (8)

HYBRID PROPULSION SYSTEM
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2010-2014 Toyota Prius and 2012-2014 Toyota Prius V vehicles. Excessive voltage in the Intelligent…
AIR BAGS:SIDE/WINDOW
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain model year 2010-2012 Toyota Prius, 2010 and 2012 Toyota Prius Plug-in Hybrid, and 2011-2012 Lexus C…
HYBRID PROPULSION SYSTEM: INVERTER
Toyota is recalling certain model year 2010 through 2014 Prius vehicles. In the affected vehicles, the Intelligent Power Module (IPM) inside the inverter module (a compo…

This does not say whether a particular car has an open, unrepaired recall. That depends on the VIN.

Before you buy a 2012 Toyota Prius

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Experimental model-level information. This is not a vehicle inspection, vehicle-history report, financial advice or purchase recommendation. It describes patterns across a model year, not the condition of any individual vehicle. Combined across 2 body styles NHTSA files separately.