MileageCurve What breaks, and at what mileage

Toyota Highlander 2014–2019

3rd generation (XU50) · XU50 · 1,886 complaints, 885 with mileage

Owners filed 1,886 complaints with NHTSA about the 2014–2019 Toyota Highlander, and 885 of them record the mileage at which the failure happened. That is enough to show not just what fails, but when.

37% of failures fall within the first 12,000 miles. Failures clustered that early usually indicate a design or manufacturing problem rather than wear.

The most-reported areas are the transmission and driveline (17.7% of complaints, typically around 38,000 miles), problems owners could not categorise (14.1% of complaints, typically around 13,700 miles), the electrical system (12.0% of complaints, typically around 35,000 miles).

14 recall campaigns cover this generation.

When failures happen

0–5k: 185 complaints (20.9%)0–5k5–10k: 104 complaints (11.8%)10–20k: 152 complaints (17.2%)10–20k20–30k: 95 complaints (10.7%)30–40k: 86 complaints (9.7%)30–40k40–50k: 67 complaints (7.6%)50–60k: 45 complaints (5.1%)50–60k60–70k: 35 complaints (4.0%)70–80k: 27 complaints (3.1%)70–80k80–90k: 20 complaints (2.3%)90–100k: 15 complaints (1.7%)90–100k100–120k: 19 complaints (2.1%)120–140k: 13 complaints (1.5%)120–140k140–160k: 3 complaints (0.3%)160–200k: 12 complaints (1.4%)160–200k200k+: 7 complaints (0.8%)1850

10% of failures occur by 1,000 miles · a quarter by 6,000 · median 20,000 · three quarters by 46,000 · 90% by 80,000. Based on 885 complaints that record mileage.

What fails, and when

SystemComplaintsShareTypical mileageMiddle half
Power Train33317.7%38,00013,000–90,000
Unknown Or Other26614.1%13,7004,000–38,000
Electrical System22612.0%35,00010,000–52,682
Engine1678.9%17,0507,100–46,000
Fuel/Propulsion System1437.6%9,8004,000–18,000
Service Brakes1357.2%15,0006,600–35,000
Structure1025.4%25,02211,562–54,790
Air Bags633.3%16,2506,600–30,000
Steering573.0%23,5006,000–63,000
Vehicle Speed Control552.9%12,0004,400–25,000

By model year

YearComplaintsWith mileage
2014161110
2015250164
201613784
2017366173
2018350155
2019622199

Which systems, and when

Complaints about this generation are not spread evenly across the vehicle, and the systems that generate the most of them do not all fail at the same point in a car's life. The median failure across all systems here is 20,000 miles; the figures below show which parts of the car run ahead of that and which run behind.

The transmission and driveline accounts for 17.7% of complaints (333 reports, 74 of them with a mileage figure), and it fails late — a median of 38,000 miles, considerably beyond the vehicle's overall median. That pattern is consistent with normal service life rather than a defect, though it matters for anyone buying an example already near that mileage. The middle half of these reports falls between 13,000 and 90,000 miles.

Problems owners could not categorise accounts for 14.1% of complaints (266 reports, 135 of them with a mileage figure), with a median of 13,700 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 4,000 and 38,000 miles.

The electrical system accounts for 12.0% of complaints (226 reports, 114 of them with a mileage figure), and it fails late — a median of 35,000 miles, considerably beyond the vehicle's overall median. That pattern is consistent with normal service life rather than a defect, though it matters for anyone buying an example already near that mileage. The middle half of these reports falls between 10,000 and 52,682 miles.

The engine accounts for 8.9% of complaints (167 reports, 80 of them with a mileage figure), with a median of 17,050 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 7,100 and 46,000 miles.

The fuel and propulsion system accounts for 7.6% of complaints (143 reports, 67 of them with a mileage figure), and it fails early — a median of 9,800 miles, well before the vehicle's overall median. Failures clustered this far below the rest of the car usually point to a design or manufacturing problem rather than wear, because wear does not selectively target one system on low-mileage examples. The middle half of these reports falls between 4,000 and 18,000 miles.

The brakes account for 7.2% of complaints (135 reports, 62 of them with a mileage figure), with a median of 15,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 6,600 and 35,000 miles.

Differences between model years

Within this generation, complaint volume is not constant across model years. The 2019 model year drew the most — 622 complaints — while 2016 drew the fewest at 137. The median year sits at 300.

That makes 2019 an outlier: roughly 2.1 times the median year of this generation. A single year standing that far apart usually reflects either a first-year issue that was later corrected, or a component change introduced for that year. Anyone shopping this generation has a straightforward reason to prefer a different year, all else being equal.

Recalls and what they cover

NHTSA records 14 recall campaigns covering vehicles in this generation. A recall means the manufacturer or the regulator concluded there was a safety defect or a standard was not met, and that a free remedy is owed to owners — including second and later owners.

The campaigns cluster around equipment (4), the fuel system (3), the electrical system (2). Repeated recalls against the same area of the car generally mean the first remedy did not fully resolve the underlying problem.

Recall status is specific to the individual vehicle, not the model. Checking a VIN against NHTSA's lookup is free and takes under a minute, and it is the only way to know whether a particular car has had the work done.

Reported severity

Of the 1,886 complaints filed against this generation, 162 reported a crash; 17 reported a fire; 149 reported an injury; 1 reported a fatality. Crash-involved reports represent 8.6% of the total.

These are owner-reported outcomes, not verified investigations, and they are not adjusted for how many of these vehicles are on the road. They are included because the distinction between a fault that strands a car and a fault that causes a collision is the one that matters most, and it is not visible in a complaint count alone.

What this means if you are buying one

For a buyer, an early-failure pattern is comparatively good news on a used example: 37% of the reported failures occur in the first 12,000 miles, which on a car of this age means they have already happened or they were never going to. Service history matters more than mileage here.

On inspection, the transmission and driveline and problems owners could not categorise are where this generation's reports concentrate, so those are the areas worth a specific look. Problems owners could not categorise in particular shows a median failure mileage of 13,700, which gives a concrete number to compare against the odometer of any car you are considering.

None of this is a substitute for a pre-purchase inspection on the individual car. Aggregate patterns describe a population; the example in front of you has its own history.

Documented problems

Fuel system 2018-2019

Denso low-pressure fuel pump impeller can deform and bind, stopping the pump and stalling the engine. Very large multi-brand recall.

Recalls (14)

CampaignDateComponent
20V6820002021-01-21Fuel System, Gasoline:Delivery:Fuel Pump
20V0120002020-05-01Fuel System, Gasoline:Delivery:Fuel Pump
19V2440002019-05-24Equipment:Other:Labels
18V2110002018-05-09Service Brakes, Hydraulic:Power Assist:Vacuum
17V8310002018-01-23Equipment:Other:Labels
17V5200002017-09-29Equipment
17V2950002017-06-15Tires:Temporary/Emergency Spare Tire
16V7750002016-11-14Electrical System:Wiring
16V4200002016-07-14Equipment:Other:Labels
15V1440002015-05-07Steering:Electric Power Assist System
14V5760002014-11-17Fuel System, Gasoline:Delivery:Hoses, Lines/Piping, And Fittings
14V2740002014-07-14Seats:Mid/Rear Assembly
14V2720002014-06-27Electrical System:Software
14V0510002014-03-17Seat Belts:Rear/Other

What owners reported

2014 · 5 miles · Equipment
FACTORY INSTALLED GPS SYSTEM WHEN SET TO A DESTINATION WILL TAKE YOU OFF THE MAIN ROAD JUST PRIOR TO YOUR DESTINATION AND DIRECT YOU IN CIRCLES THEN TELL YOU TO GET BACK ON THE MAIN ROAD THAT YOU JUST GOT OFF OF. THIS CREATES AN ISSUE AS ONE TIME IT TOOK US IN A UNDESIRABLE NEIGHBORHOOD; BUT MORE OFTEN THAN NOT WILL TAKE YOU CRUISING IN UNKNOWN NEIGHBORHOOD'S BEFORE IT TELLS YOU TO GET BACK ON THE…
2014 · 5 miles · Electrical System
AUTOMATIC/POWER LIFTGATE DOES NOT CLOSE ALL THE WAY. STARTS - THEN STOPS HALF TO 90% CLOSED. REQUIRES MANUALLY LOWERING TO CLOSE. HAPPENS 75% OF THE TIME. TOYOTA DEALER RELUCTANTLY ACKNOWLEDGED A SERVICE BULLETIN AND SAYS THEY WILL REPLACE MOTOR BUT IT TOOK SOME PUSHING TO GET PAST THE SERVICE DESK AND TECH WHO SAY, "WE COULDN'T FIND ANYTHING WRONG". I SAID NOT GOOD ENOUGH ANSWER AND, LO AND…
2014 · 100 miles · Power Train
THIS COMPLAINT RELATES TO TRANSMISSION SHIFT SEQUENCES. WHEN STARTING OUT, THE TRANSMISSION IS IN FOURTH GEAR. IF YOU ARE AT SAY A TRAFFIC LIGHT AND ARE MAKING A LEFT TURN, AND THEN NEED TO MAKE A RAPID ACCELERATION, THE TRANSMISSION SHIFTS DOWN TO A LOWER GEAR, PROBABLY 1ST GEAR. WHEN THIS HAPPENS, THERE IS A SIGNIFICANT TORQUE STEER THAT AN INEXPERIENCED DRIVER WOULD FIND VERY DISTURBING. A…
2014 · 400 miles · Electrical System
OUR 2014 TOYOTA HIGHLANDER LIMITED WAS PURCHASED NEW WITH 18 MILES ON FEBRUARY 25, 2014. ON MARCH 7, 2014 WHILE DRIVING ON CITY STREETS ANOTHER DRIVER FAILED TO STOP AT A RED LIGHT SO I PRESSED THE HORN TO ALERT THE DRIVER WHILE I SWERVED OUT OF HIS PATH. THE HORN DID NOT WORK SO THE DRIVER WAS NOT ALERTED AND CONTINUED IN THEIR DIRECTION OF TRAVEL. MY NEED TO SWERVE WOULD HAVE BEEN AVOIDED IF …

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