Most common 2018 Toyota Prius c problems
Share of the 6 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Toyota Prius c complaints by model year
Best Prius c years: 2018, 2016, 2015. Years to avoid: 2012, 2013. Compare all years →
2018 Toyota Prius c recalls (2)
Hybrid propulsion system
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2018-2019 Prius C vehicles. The DC-DC converter may fail resulting in the auxiliary battery no longer receiving power from the converter, which may cause a loss of drive.
Remedy: Toyota will notify owners, and dealers will replace the DC-DC converter with a new one, as necessary, free of charge. The recall began August 23, 2019. Owners may contact Toyota customer service at 1-888-270-9371.
Equipment › Other › Labels
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2018 Toyota Prius C vehicles sold in Puerto Rico. The front passenger air bag and recommended child occupant seating positions label may not have been attached during assembly.
Remedy: Toyota will notify owners and will mail the removable labels to all known owners of the subject vehicles, free of charge. The recall began on April 11, 2018. Owners may contact Toyota customer service at 1-888-270-9371.
NHTSA defect investigations
Federal safety investigators have looked into a possible defect involving the 2018 Toyota Prius c:
Pedestrian alert sounds
NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles.
2018 Toyota Prius c engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 1.5L 4-cyl hybrid | CVT | FWD | 48 / 43 / 46 |
EPA ratings. Class: Compact car.
Frequently asked questions
Is the 2018 Toyota Prius c a good car?
Based on 6 owner complaints filed with NHTSA, the 2018 Prius c rates better than average: 62% fewer complaints than a typical year of the Prius c at the same age. It is one of the best Prius c years by this measure. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2018 Toyota Prius c?
The windows, wipers & sunroof — 1 complaint, 17% of all complaints for this model year. Next are the steering (1) and electrical system (1).
How many recalls does the 2018 Toyota Prius c have?
There are 2 recalls for the 2018 Toyota Prius c, the most recent from June 26, 2019 (hybrid propulsion system). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Toyota Prius c?
The best years by complaints, compared at the same age, are 2018, 2016 and 2015. Years to avoid or approach with caution: 2012 and 2013. See the full Toyota Prius c years comparison.
At what mileage do 2018 Toyota Prius c problems happen?
The median mileage reported in complaints is about 10,000 miles; 100% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.