2018 Toyota PRIUS PRIME problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
16 owner complaints analyzed
0 distinct recall campaigns
15,000 mi median reported failure mileage
Scope: 2018 model year. Data snapshot: . 7 complaints include usable failure mileage.
Most common problems
Unknown Or Other is the most frequently named component, appearing in 3 of 16 complaints (18.8%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Braking behavior | 5 | 31.3% |
| Engine operation | 2 | 12.5% |
| Electrical and battery issues | 2 | 12.5% |
| Transmission and shifting | 1 | 6.3% |
| Steering behavior | 1 | 6.3% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Unknown Or Other | 3 |
| Air Bags | 2 |
| Fuel/Propulsion System | 2 |
| Power Train | 2 |
| Back Over Prevention: Rearview System Braking | 1 |
| Back Over Prevention: Warnings | 1 |
| Electrical System | 1 |
| Engine | 1 |
Unknown Or Other: 3; Air Bags: 2; Fuel/Propulsion System: 2; Power Train: 2; Back Over Prevention: Rearview System Braking: 1; Back Over Prevention: Warnings: 1; Electrical System: 1; Engine: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 5 |
| 25,000 to 49,999 | 2 |
| 50,000 to 74,999 | 0 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 0 |
Under 25,000: 5; 25,000 to 49,999: 2; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
Under 25,000 miles has the most reports with usable mileage (5). 9 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2018 | 1 |
| 2020 | 3 |
| 2021 | 3 |
| 2022 | 1 |
| 2023 | 4 |
| 2024 | 1 |
| 2025 | 1 |
| 2026 | 2 |
2018: 1; 2020: 3; 2021: 3; 2022: 1; 2023: 4; 2024: 1; 2025: 1; 2026: 2
Pattern summary
Unknown Or Other leads the component reports. Braking behavior appears in 5 complaint narratives. Engine operation appears in 2 complaint narratives. Electrical and battery issues appears in 2 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 11307431 · 2020-02-06 (February 6, 2020)
AFTER STARTING FROM A STOP AFTER THE TRAFFIC LIGHT TURNED GREEN, THE CAR IN FRONT OF ME PULLED AHEAD AS THEY ACCELERATED FASTER THAN ME. WHEN THE CAR IN FRONT OF ME WAS ABOUT 50 YARDS IN FRONT OF ME, AND I HAD REACHED ABOUT 25 MILES PER HOUR THE CAR'S COLLISION AVOIDANCE SYSTEM ENGAGED AND SLAMMED ON THE BRAKES AND BROUGHT ME TO A FULL STOP. THE CAR IN FRONT OF ME HAD NOT APPLIED THEIR BRAKES OR SLOWED AT ALL, AND THERE WERE NO VISIBLE OBSTACLES. MY CAR STOPPED SO SUDDENLY THAT I THOUGHT I HAD BEEN HIT FROM THE REAR AT HIGH SPEED UNTIL THE RED …
Owner-reported narrative. 22,500 miles reported. Look up ODI 11307431 at NHTSA ↗
Owner report 11374200 · 2020-11-11 (November 11, 2020)
'HYBRID SYSTEM FAILURE' APPEARED ON DASH DISPLAY DURING A LONG (120 MILE) DRIVE AT HIGHWAY SPEED ON SEPTEMBER 24. AFTER DRIVING ABOUT 40 MILES FURTHER, THE 'CHECK ENGINE LIGHT' CAME ON AND THE DISPLAY SAID TO PULL OVER IMMEDIATELY. AS I PULLED OFF THE FREEWAY, MESSAGES TOLD ME THE POWER STEERING AND POWER BRAKES WERE SHUTTING OFF AND LEFT ME IN FEAR THE CAR WOULD DIE ON THE FREEWAY RAMP BEFORE I COULD PULL OVER. TOWED CAR TO DEALER WHO FIXED A LOOSE CABLE. THIS WEEK (11/10) THE DISPLAY SHOWED THE SAME MESSAGE. THIS IS NOW A RECURRING PROBLEM W…
Owner-reported narrative. 15,000 miles reported. Look up ODI 11374200 at NHTSA ↗
Owner report 11517150 · 2023-04-14 (April 14, 2023)
Take foot of break, car accelerates under power. Sooner or later, this is going to result in killing a pedestrian. The question has been for the last year, is this a behavior that can be gotten used to. The answer is definitely NO! This resulted in a near collision with a pedestrian today. Toyota believes the behavior is intentional and will not confirm the safety issue. Farmers Insurance is willing to believe the issue exists without inspection but has no idea what to do. You have a problem on your hands. Biden is trying to transition almos…
Owner-reported narrative. Look up ODI 11517150 at NHTSA ↗
Owner report 11722132 · 2026-03-04 (March 4, 2026)
There has been at least 4 times that the vehicle was not responsive to acceleration (stalled for a few seconds) then picked back up. Problem has been intermittent. There is no dash indication of an issue. Because concern is intermittent I haven’t taken vehicle in. There is NO CHECK ENGINE light on. My wife experienced it once, I’ve experienced it 3 times. Once going up steep hill, once on a steady incline and the other 2 times at 50 mph on the highway. My layman’s take points to an Inverter issue in the IPM. Intelligent Power Module having a vo…
Owner-reported narrative. Look up ODI 11722132 at NHTSA ↗
Owner report 11384074 · 2020-12-18 (December 18, 2020)
AFTER THE HYBRID BATTERY IS DISCHARGED, AND THE GAS ENGINE KICKS IN, THE VEHICLE LOSES POWER FOR APPROXIMATELY 5-10 SECONDS ON THE FREEWAY. THIS HAS HAPPENED FOUR TIMES, AT APPROXIMATELY 7 AM, ON DECEMBER 1, 10, 14 AND 15. ON ALL OCCASIONS, THE TEMPERATURE WAS BETWEEN 40-45 DEGREES FAHRENHEIT, AND AT HIGHWAY SPEEDS. THE CRUISE CONTROL WAS NOT IN USE. NO WARNING LIGHTS CAME ON. I CALLED THE TOYOTA DEALER ON DECEMBER 1 AND THE SERVICE ADVISER SAID THAT SINCE NO WARNING LIGHTS CAME ON, HE COULD NOT DETERMINE THE PROBLEM. I HAVE A PHOTO SHOWING MY…
Owner-reported narrative. 20 miles reported. Look up ODI 11384074 at NHTSA ↗
Owner report 11723385 · 2026-03-10 (March 10, 2026)
On at least 4 occasions when the EV battery becomes depleted while driving at highway speeds and the car is switching to gas, the engine completely loses all power. This has lasted from 10-30 seconds. The dealership said a small battery needed to be replaced, and replaced that, but this recurred within a month of replacement.
Owner-reported narrative. Look up ODI 11723385 at NHTSA ↗