Car · Toyota problems

2012 Toyota Prius problems

424 owner complaints filed with NHTSA for the 2012 Toyota Prius. The most reported area is service brakes (47% of them). NHTSA also lists 184 service bulletins and 7 recall campaigns.

Counts are what owners told NHTSA, as filed. NHTSA does not confirm each report, and a complaint is not proof of a cause. Injuries: 33. Deaths: 0.

Complaints by area

Each bar is the share of this model year's 424 complaints that name that area. A complaint can name more than one area, so the shares add up to more than 100%.

• Service brakes200 · 47%
• Electrical system52 · 12%
• Exterior lighting36 · 8%
• Engine and engine cooling32 · 8%
• Other or unknown31 · 7%
• Visibility and wipers30 · 7%
• Air bags28 · 7%
• Body and structure23 · 5%

17 smaller areas not shown (112 complaints in total).

Do not compare models by these numbers. NHTSA has no sales count for each model, so a model with more complaints may just have sold more cars. Use them to see which areas owners write about, not to rank cars.

Service bulletins

NHTSA's database lists 184 repair bulletins from Toyota for the 2012 Toyota Prius. A bulletin is a repair instruction sent to dealers. It is not a recall and does not mean your car is covered. The 8 newest:

1. T-SB-0009-26Received March 7, 2026

   Engine and engine cooling

   This bulletin includes basic procedures for performing a rescue charge on Ni-MH high voltage (HV) batteries.

2. T-SB-0119-15 Rev2Received March 7, 2026

   Engine and engine cooling

   OBSOLETE NOTICE February 13, 2026: This bulletin is now obsolete.

3. T-SB-0055-24 Rev2Received February 11, 2026

   Some 2005 - 2026 Toyota vehicles that have undergone water intrusion may exhibit a condition in which a musty odor is present.

4. T-SB-0035-24 Rev2Received January 9, 2025

   Body and structure

   Acid rain results from rainwater or other airborne moisture that become acidic due to industrial chemical impurities in the atmosphere.

5. T-SB-0038-24 Rev2Received January 9, 2025

   Body and structure

   To prevent brake rotor rust from forming during transportation and storage, wheel film will be used instead of a cardboard type of anti-rust cover.

6. T-SB-0039-24 Rev2Received January 9, 2025

   Body and structure

   The condition known as acid rain is caused by airborne chemicals or particles in the atmosphere, which mix with rainwater, nighttime dew, or high humidity to form acidic compounds.

7. T-SB-0062-23 Rev2Received January 9, 2025

   Body and structure

   Vehicles may occasionally be subjected to contamination by airborne iron particles shed from railroad tracks, train wheels, exposure to heavy machinery facilities, grinding, welding, etc.

8. T-PANT-2024-004-Received April 15, 2024

   Engine and engine cooling

   This is to advise of various price adjustments that will affect Toyota Genuine Motor Oil and Long Life Coolant, effective March 1, 2024.

Recalls

NHTSA lists 7 recall campaigns for the 2012 Toyota Prius. Recall repairs are free at a Toyota dealer. The 3 to look at first:

1. 18V684000October 4, 2018

   Hybrid propulsion system

   Excessive voltage in the Intelligent Power Module (IPM) within the inverter may cause the hybrid system to shut down, causing the vehicle to stall while being driven.

2. 17V718000November 15, 2017

   Hybrid propulsion system

   The hybrid battery contains an Electric Vehicle (EV) fuse that may fracture after repeated high-load driving conditions such as climbing long hills.

3. 16V487000June 30, 2016

   Air bags

   A weld in the curtain shield air bag inflator may crack causing one or both portions of the inflator to eject into the passenger cabin.

See all 7 recalls for the 2012 Toyota Prius, or check your VIN below to see which are open on your car.

Common repairs in this area (not a diagnosis)

These are repair jobs that sit in the areas owners report most. A complaint may need a diagnosis first: the same symptom can come from many causes, and a serious one such as engine failure is not fixed by a cheap part. They are not a forecast of what your Prius will need. Ranges are US estimates for all makes.

Start with a diagnosis

• Diagnostic scan (check engine light)$55 to $250

Service brakes 200 complaints · 47%

• Brake pad replacement (front)$190 to $400
• Brake rotors and pads (front)$320 to $790
• Brake pad replacement (rear)$180 to $420
• Brake caliper replacement (one wheel)$240 to $590
• Brake fluid flush$75 to $180

Electrical system 52 complaints · 12%

• Battery replacement$150 to $470
• Alternator replacement$360 to $930
• Starter replacement$280 to $740
• Battery cable replacement$100 to $340

Exterior lighting 36 complaints · 8%

No repair price here: this area usually needs a diagnosis first. A diagnostic scan (check engine light) runs $55 to $250.

Check a quote you got

Check your VIN

Complaints and bulletins cover a whole model year. Only the VIN shows what is open on your car.

By VIN By year, make and model

VIN (17 characters, on the dashboard by the windshield or the driver door jamb)

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Recall and complaint data comes from NHTSA, the US government's vehicle safety agency, and is cached for up to a day. Recall repairs at a dealer are free. A recall that is not listed may not apply to your car or may not be filed yet. Check nhtsa.gov/recalls too.

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2012 Toyota Prius: questions

What are the most common problems on the 2012 Toyota Prius?

Of the 424 owner complaints filed with NHTSA for the 2012 Toyota Prius, 200 (47%) name service brakes, and 52 (12%) name electrical system. A complaint can list more than one area, so the shares add up to more than 100%. These are owner reports, not proven causes.

Is the 2012 Toyota Prius reliable?

These numbers cannot say. NHTSA complaints have no sales count to compare against, so a high number on one model does not mean it fails more than another. Use them to see which areas owners write about, then check your own VIN for open recalls.

Do these complaints include crashes or fires?

Owners marked 46 of the 424 complaints as involving a crash and 2 as involving a fire. They also reported 33 injuries and 0 deaths. NHTSA records these as the owner reports them and does not confirm each one.

How many recalls does the 2012 Toyota Prius have?

NHTSA lists 7 recall campaigns for the 2012 Toyota Prius. Recall repairs are free at a Toyota dealer. Enter your VIN to see which ones are open on your car.

What is a service bulletin?

A service bulletin is a repair instruction a maker sends to its dealers. It is not a recall, and it does not mean your car is covered. NHTSA lists 184 repair bulletins for the 2012 Toyota Prius.

More

• 2014 Prius problems
• 2013 Prius problems
• 2011 Prius problems
• 2010 Prius problems
• 2012 recalls
• All Toyota recalls
• Toyota problems by model
• Check-engine codes

Sources

• NHTSA complaint and technical service bulletin files, checked October 29, 2026
• NHTSA recalls

Complaint, bulletin and recall counts come from NHTSA as filed. Repair prices are estimates from our own ranges. Not a repair shop, estimates only.