2018 Toyota Highlander Reliability Score & Common Problems

Owners of the 2018 Toyota Highlander frequently report issues related to the electrical system, with multiple complaints about starting failures often accompanied by a "Braking Power Low" message. Several reports indicate problems with the vehicle's Auto Start/Stop feature, leading to loss of motive power, particularly around 50,000 to 80,000 miles. Complaints also mention frequent battery replacements and Bluetooth connectivity issues, which result in dropped calls and require manual reconnection. Safety implications arise in reports of spontaneous acceleration, malfunctioning airbag sensors, and the vehicle stopping unexpectedly, though no crashes or injuries are noted. These patterns suggest potential concerns for used car buyers regarding reliability and safety features.

Owners of the 2018 Toyota Highlander frequently report engine oil leaks, particularly from the cam tower and valve cover seals, with these issues often manifesting around 52,500 miles. Symptoms described include visible fluid leaks, the smell of burning oil, and in one case, a fire originating from the engine compartment. Additionally, some owners experience engine stalling or hesitation, often accompanied by the check engine light, with issues such as low compression in a cylinder or fuel pump problems noted around 20,000 to 61,000 miles. These complaints highlight potential safety implications, including the risk of engine fires and stalling while driving, which are critical for used car buyers to consider.

Owners report frequent issues with the airbag system in the 2018 Toyota Highlander, particularly noting non-deployment during crashes. Complaints frequently mention scenarios where vehicles experienced significant frontal impacts, yet airbags did not activate, leading to injuries. Many reports also describe unintended acceleration or sticky pedal incidents, though these are less common. The incidents often occur at varying mileages, with some vehicles having as few as 15,000 miles. Safety implications are significant, as 14 of the 17 complaints involve crashes, with multiple injuries reported, making this a critical consideration for potential buyers.

Owners of the 2018 Toyota Highlander frequently report issues related to the fuel system, primarily involving stalling and difficulties starting the vehicle. Complaints often describe the vehicle stalling unexpectedly at various speeds, with some instances occurring after the vehicle has been stopped. Several owners note that these issues persist even after battery replacements and are sometimes accompanied by warning lights. Mileage at the time of failure varies, with reports ranging from approximately 9,000 to 80,000 miles. Safety concerns are evident as the stalling can occur while driving, though no crashes or fires are reported. Many owners express frustration over delays in recall repairs, with parts often unavailable, impacting their confidence in the vehicle.

Owners of the 2018 Toyota Highlander frequently report issues with the steering system, particularly difficulty in turning the steering wheel. Complaints often describe the steering wheel becoming hard to turn or locking up entirely, with some instances accompanied by warning messages such as "ETS Failure - Steering Will Be Harder to Steer." These issues sometimes occur alongside other vehicle malfunctions, including total vehicle shutdowns and electronic failures. The reported incidents occur at various mileages, with some as early as 1,000 miles and others around 200,000 miles. Safety implications are significant, as several owners mention near misses and potential loss of control during these events. Buyers should be aware of these steering-related concerns when considering this model.

Owners of the 2018 Toyota Highlander frequently report issues with the vehicle's structure, particularly involving the rear hatch and glass components. Common symptoms include spontaneous glass breakage in the rear hatch while stationary and unusual noises from the hatch area, often described as squeaking or rubbing. Several complaints involve the spoiler detaching and obstructing the hatch operation, with some instances of the glass shattering without impact. Reports also highlight structural problems with the trailer hitch and melting of plastic components near the exhaust when towing. Safety concerns are noted, including one incident involving a crash where the vehicle accelerated unexpectedly, resulting in property damage and an injury. These issues are observed across varying mileages, with some occurring as early as 1,000 miles.

Owners report several issues with the 2018 Toyota Highlander's suspension. Multiple complaints describe abnormal noises, such as squeaking and banging from the rear when driving over rough surfaces or braking hard, with some reports noting these symptoms as early as 3,168 miles. One owner mentions a vehicle rolling unexpectedly while parked, despite the emergency brake being engaged, resulting in an injury. Another owner describes alignment issues leading to tire cupping and feathering within the first 5,000 miles. These reports suggest potential safety concerns related to vehicle control and stability.