Vehicle was driving on street and check engine light came on. Took vehicle to service provider and is related to recall. No remedy for recall has been developed -- currently driving a loaner car.
2018 Toyota Highlander engine problems
moderate 16 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Failure mileage
Complaints
16
Recalls
0
Avg fix
$3,100
When does it fail?
Of the 16 engine complaints filed for the 2018 Toyota Highlander, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
No new NHTSA engine complaint has been filed on this vehicle in over 5 years — the issue may be aging out of the active population.
What owners are reporting 3 most recent
Wife was driving and out of nowhere axle to the transfer case broke leaving her stranded in the middle of the road. Seems like transmission had been a common issue in these vehicles around the same year
After vehicle has warmed up engine RPM speed drops to near 500 when brake engaged at stop lights and vehicle idles rough and attempts to stall. Shifting to neutral brings RPM speed back up and idles smooth again. Problem occurs daily over last two months. Vehicle is near new, 1750 miles. Auto stop start feature is not engaged. Taken to dealer who advised no problem found. Returning to dealer…
Had engine trouble with your 2018 Toyota Highlander?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2018 Toyota Highlander?
It's a documented issue but not catastrophic. 16 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Across the 10 complaints that reported odometer mileage, most engine failures cluster between 10,999 and 37,000 miles, with the median around 20,000. A quarter of owners report trouble before 10,999; a quarter make it past 37,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2018/Toyota/Highlander.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.