What are the most common Toyota Yaris problems?
According to Au7o's analysis of 2,500+ owner reports, the 2009 Toyota Yaris has 10 documented issues. The most frequently reported are: Electric Power Steering (EPS) Failure, Takata Ammonium-Nitrate Airbag Inflator Rupture (Front Passenger/Driver), 4-Speed Automatic Transmission Shudder and Harsh Shifts. Of these, 2 are rated critical and should be addressed promptly.
Is the Toyota Yaris reliable?
The 2009 Toyota Yaris has 10 known issues documented across 2,500+ owner reports. 2 issues are rated critical: Electric Power Steering (EPS) Failure and Takata Ammonium-Nitrate Airbag Inflator Rupture (Front Passenger/Driver). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Toyota Yaris problems?
Repair costs for known Toyota Yaris issues range from $0 to $3,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Electric Power Steering (EPS) Failure, typically costs $300-$1,200 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2007-2018 Toyota Yaris Electric Power Steering (EPS) Failure?
The Yaris's electric power steering system can fail, causing sudden loss of power assist and very heavy steering. The EPS motor or its control module malfunctions, typically with a power steering warning light. The failure is sudden and dangerous at low speeds. Repairs typically run $300-$1,200. Severity: high.
What is the 2007-2012 Toyota Yaris Takata Ammonium-Nitrate Airbag Inflator Rupture (Front Passenger/Driver)?
Yaris hatchback and sedan built in the Takata era use inflators with a non-desiccated ammonium-nitrate propellant. Long-term exposure to heat, humidity and temperature cycling degrades the propellant, so on deployment the inflator canister can over-pressurize and rupture, sprayin… Repairs typically run $0-$0. Severity: high.
What is the 2007-2018 Toyota Yaris 4-Speed Automatic Transmission Shudder and Harsh Shifts?
The U340E/U441E 4-speed automatic in the Yaris develops shudder during torque converter lockup and harsh shifts, particularly 1-2 and 2-3 shifts. Worn transmission fluid and torque converter clutch material are the primary causes. Repairs typically run $150-$1,800. Severity: medium.
What is the 2007-2018 Toyota Yaris Cylinder #1 Ignition Coil-on-Plug Failure and Spark Plug Well Water Intrusion (1NZ-FE)?
The 1NZ-FE/2NZ-FE coil-on-plug packs are a recurring failure point, and cylinder 1 - the one closest to the front of the engine and nearest the cowl drain area - fails disproportionately. Two mechanisms show up on the forums: the coil's internal windings break down with heat and… Repairs typically run $60-$300. Severity: medium.
What is the 2007-2015 Toyota Yaris High-Mileage Oil Consumption from Worn Piston Rings / Valve Stem Seals (1NZ-FE)?
The 1NZ-FE is not an oil burner when new, but owners on yarisworld report it developing meaningful consumption once the rings wear - reports cluster around a half-dipstick per 2,500 miles up to roughly one liter per 2,000 miles. The causes are the usual pair: coked/stuck oil cont… Repairs typically run $150-$2,500. Severity: medium.
What is the 2007-2018 Toyota Yaris Front Engine Mount Premature Failure?
The Yaris front engine mount (also called the dogbone mount or torque strut) fails prematurely, typically between 60,000-100,000 miles. The rubber deteriorates and the mount collapses, allowing excessive engine movement during acceleration and braking. This causes a harsh clunk w… Repairs typically run $100-$400. Severity: medium.
What is the 2007-2018 Toyota Yaris Rear Wheel Speed Sensor Corrosion at the Hub Connector (ABS and Brake Warning Lights)?
A very common Yaris electrical fault: the rear wheel speed sensor is integrated into the rear hub/bearing assembly and is not sold separately. The weather seal where the harness plugs into the hub has a gap, so road spray and winter salt wick into the connector, corrode the pins… Repairs typically run $20-$700. Severity: medium.
What is the 2006-2014 Toyota Yaris Interior Door Handle Breaking?
The interior door handles on the Yaris are made of brittle plastic that cracks and breaks, particularly in cold weather. The driver's side handle fails most often due to higher use frequency. The handle mechanism is a weak point across all Yaris model years. Repairs typically run $15-$150. Severity: low.
What is the 2007-2009 Toyota Yaris Factory Clear Coat Delamination from Roof, Hood and Pillars?
Early XP90 Yaris (heavily reported on 2007-2008, and worst on the 8T0 blue and other lighter shades) suffer clear coat delamination: UV exposure degrades the adhesion between the factory primer/base and the clear layer, so the clear sheets off in large flakes rather than chalking… Repairs typically run $800-$3,500. Severity: low.
What is the 2006-2011 Toyota Yaris Exterior Door Handle Breakage?
First-generation Yaris exterior door handles are made of brittle plastic that cracks and breaks, especially in cold weather. The driver's side handle fails most frequently due to daily use. When the handle breaks, the door cannot be opened from outside, requiring entry from the p… Repairs typically run $50-$200. Severity: low.
