2018 Toyota Yaris Ia Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2018 Toyota Yaris Ia, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Tires & wheels225.0%
- Brakes112.5%
- Driver assistance112.5%
- Airbags112.5%
- Engine112.5%
- Seat belts112.5%
- Electrical112.5%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Tires & wheels
Reports naming tires, wheels, hubs, or the tire-pressure monitoring system.
From owner reports, verbatim
This is a safety issue that needs to be addressed. I informed the Manufacturer , Yokohama, as soon as the incident occurred and had to be replaced by a tire shop. These tires can explode if they hit anything, on the side, at less than 2mph (two miles per hour).
TL* THE CONTACT OWNS A 2018 TOYOTA YARIS IA EQUIPPED WITH TOYO TIRES, TIRE LINE: PROXES A27, TIRE SIZE: P185/60R/16, DOT NUMBER: (NOT PROVIDED). THE CONTACT STATED WHILE DRIVING AT VARIOUS SPEEDS THE TIRES LOSS AIR WITHOUT WARNING. THE CONTACT ADDED AIR TO TIRES. THE LOCAL DEALER WAS NOT CONTACTED. THE VEHICLE WAS NOT DIAGNOSED NOR REPAIRED. THE CONTACT STATED THAT THE FAILURE WAS LIKE NHTSA CAMPAIGN NUMBER: 19T004000 (TIRES). THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS 38,789. THE VIN WAS NOT AVAILABLE.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Brakes
Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.
From owner reports, verbatim
I’m reporting a vehicle safety problem. My 2018 Toyota Yaris IA just had a mileage of 823 miles and was within the warranty time and had a brake system problem caused by the Toyota car quality problem. On August 22 (Sunday), 2021 about 1:00 pm I, with my wife, was going to drive my 2018 Toyota Yaris IA to my daughter’s house to see our five grandchildren as we did since April when we had covid 19 vaccine. When I started the car in my house parking lot, I was surprised to find several indicators of the brake system malfunction were on the car’s computer screen. Not only did the indicators still exist in the screen, I felt the car was shaking when I was driving about 30 feet. I immediately returned back to my house parking lot and found a new problem that the air conditioning didn’t work either. I decided not to drive this car. The next day, August 23 about 7:00 am, I drove to Oakton Sonoco Auto Service Center. There, Jim, the manager, found the same indicators of the brake system malfunction, he at once told me, “Your car just has 800 mileages and is under warranty. You should drive to the Toyota dealer immediately.” Then I drove to Ourisman Fairfax Toyota at about 7:25 am and told Mr. Carroll Hyman about the car problems. At about 4:00 pm he called me and said, “Mice bit and broke the wires to damage the wire system. Your car’s repairing can not have the warranty.” I asked, “Did you see the mice?” He answered, “Yes, the mice were in the wires close to the engine”. He didn’t mention whether the mice were alive or dead. If the mice were alive when he saw them, how could the mice be still there after about 18 hours including 20 minutes suffering heat, noise and vibration created by the working engine? If the mice were dead when he saw them, while I was driving several miles , the engine chatter and inertia of the moving body of the car already threw away dead mice into the road, how could he see them still there? His saying contradicts the facts.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Driver assistance
Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.
From owner reports, verbatim
CRUISE CONTROL SPEED DOES NOT MATCH SPEEDOMETER TOYOTA ADMITS THERE IS A PROBLEM, BUT THERE IS NO FIX. TOYOTA CASE #[XXX] PAT LOBB TOYOTA VISIT 8-24-19 INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TT PAT LOBB TOYOTA VISIT 9-3-19 TOYOTA OF PLANO VISIT 9-15-19
Too few reports in this category for a page of its own — they appear in the full complaint list.
Airbags
Reports naming the air-bag system — deployment behaviour, inflators, sensors and warning lights.
From owner reports, verbatim
MY TRACTION CONTROL GOES CRAZY EVEN WHEN THE WEATHER IS NICE. WHEN DRIVING THE TRACTION CONTROL WILL START BLINKING AND TURN OFF. MY SAFETY RESTRAINT SYSTEM HAS AN ERROR AND MY SEAT BELT LATCH IS BROKEN. THEY SAID THEY WOULD NOT FIX IT BECAUSE ITS NOT AN ISSUE. MY CAR MAKES LOUD BEEPS WHEN I START. MY KEYLESS ENTRY HAS MALFUNCTIONED SINCE 2 MONTHS AFTER I BOUGHT IT IN DEC OF 2018. THEY WANT TO CHARGE ME TO "LOOK AT IT". IT SAYS THERE ARE NO KEYS IN THE VEHICLE WHEN I AM DRIVING. MY AIRBAGS ARE MALFUNCTIONING. IT IS NOT REGISTERING PEOPLE SITTING IN THE VEHICLE. WHEN DRIVING DOWN THE ROAD IT FLASHES THAT THE AIRBAGS ARE OFF. I WEIGHT 220LBS I AM MORE THAN ENOUGH TO SET THAT SENSOR OFF AND WHEN I DRIVE IT WILL NOT ENGAGE.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
The contact owns a 2018 Toyota Yaris IA. The contact stated while driving at an undisclosed speed, the Forward Collision Avoidance and TPMS warning lights illuminated. The contact stated that the accelerator pedal was depressed however, the vehicle failed to respond. The contact stated that she depressed the brake pedal however, the vehicle failed to respond. The vehicle stalled and stopped independently. The contact veered to the side of the road. The contact was unable to restart the vehicle after several attempts. The vehicle was towed to the dealer where unknown repairs where completed. However, the failure reoccurred while driving. Additionally, the contact stated that the vehicle failed to start after several attempts. The contact jumpstarted the vehicle and the vehicle restarted as needed. The check engine warning light was illuminated. The vehicle was taken to a local Pep Boys where it was diagnosed that the failure was associated to the engine control module. The dealer and the manufacturer were notified of the failure and informed the contact that the vehicle only had a power train warranty. The vehicle was not repaired. The failure mileage was approximately 26,000.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Seat belts
Reports naming seat belts, buckles, retractors and pretensioners.
From owner reports, verbatim
MY TRACTION CONTROL GOES CRAZY EVEN WHEN THE WEATHER IS NICE. WHEN DRIVING THE TRACTION CONTROL WILL START BLINKING AND TURN OFF. MY SAFETY RESTRAINT SYSTEM HAS AN ERROR AND MY SEAT BELT LATCH IS BROKEN. THEY SAID THEY WOULD NOT FIX IT BECAUSE ITS NOT AN ISSUE. MY CAR MAKES LOUD BEEPS WHEN I START. MY KEYLESS ENTRY HAS MALFUNCTIONED SINCE 2 MONTHS AFTER I BOUGHT IT IN DEC OF 2018. THEY WANT TO CHARGE ME TO "LOOK AT IT". IT SAYS THERE ARE NO KEYS IN THE VEHICLE WHEN I AM DRIVING. MY AIRBAGS ARE MALFUNCTIONING. IT IS NOT REGISTERING PEOPLE SITTING IN THE VEHICLE. WHEN DRIVING DOWN THE ROAD IT FLASHES THAT THE AIRBAGS ARE OFF. I WEIGHT 220LBS I AM MORE THAN ENOUGH TO SET THAT SENSOR OFF AND WHEN I DRIVE IT WILL NOT ENGAGE.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
The contact owns a 2018 Toyota Yaris IA. The contact stated while driving at an undisclosed speed, the Forward Collision Avoidance and TPMS warning lights illuminated. The contact stated that the accelerator pedal was depressed however, the vehicle failed to respond. The contact stated that she depressed the brake pedal however, the vehicle failed to respond. The vehicle stalled and stopped independently. The contact veered to the side of the road. The contact was unable to restart the vehicle after several attempts. The vehicle was towed to the dealer where unknown repairs where completed. However, the failure reoccurred while driving. Additionally, the contact stated that the vehicle failed to start after several attempts. The contact jumpstarted the vehicle and the vehicle restarted as needed. The check engine warning light was illuminated. The vehicle was taken to a local Pep Boys where it was diagnosed that the failure was associated to the engine control module. The dealer and the manufacturer were notified of the failure and informed the contact that the vehicle only had a power train warranty. The vehicle was not repaired. The failure mileage was approximately 26,000.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .