MileageCurve What breaks, and at what mileage

Jeep Wrangler 2007–2017

JK (4th generation) · JK (JKU for 4-door Unlimited) · 9,053 complaints, 6,125 with mileage

Owners filed 9,053 complaints with NHTSA about the 2007–2017 Jeep Wrangler, and 6,125 of them record the mileage at which the failure happened. That is enough to show not just what fails, but when.

Failures are spread across the mileage range, with the middle half between 25,000 and 77,100 miles. The median is 50,000 miles.

The most-reported areas are the airbag system (13.8% of complaints, typically around 67,000 miles), the engine (11.8% of complaints, typically around 55,000 miles), the transmission and driveline (11.5% of complaints, typically around 32,000 miles).

21 recall campaigns cover this generation.

When failures happen

0–5k: 465 complaints (7.6%)0–5k5–10k: 219 complaints (3.6%)10–20k: 536 complaints (8.8%)10–20k20–30k: 515 complaints (8.4%)30–40k: 638 complaints (10.4%)30–40k40–50k: 639 complaints (10.4%)50–60k: 594 complaints (9.7%)50–60k60–70k: 615 complaints (10.0%)70–80k: 450 complaints (7.3%)70–80k80–90k: 369 complaints (6.0%)90–100k: 295 complaints (4.8%)90–100k100–120k: 368 complaints (6.0%)120–140k: 202 complaints (3.3%)120–140k140–160k: 117 complaints (1.9%)160–200k: 77 complaints (1.3%)160–200k200k+: 26 complaints (0.4%)6390

10% of failures occur by 8,000 miles · a quarter by 25,000 · median 50,000 · three quarters by 77,100 · 90% by 107,272. Based on 6,125 complaints that record mileage.

What fails, and when

SystemComplaintsShareTypical mileageMiddle half
Air Bags1,24913.8%67,00046,753–90,000
Engine1,07011.8%55,00029,000–79,900
Power Train1,03911.5%32,00012,000–60,628
Electrical System96810.7%58,30031,000–84,000
Steering95610.6%45,00024,000–74,100
Service Brakes5846.5%49,00026,835–76,000
Fuel/Propulsion System5606.2%51,00030,000–76,076
Unknown Or Other4675.2%54,00022,000–80,000
Suspension4394.8%46,88227,443–74,000
Fuel System, Gasoline2472.7%35,50021,000–50,000

By model year

YearComplaintsWith mileage
2007792652
20081,2541,038
2009495396
2010905720
2011680517
20121,285746
20131,045569
2014852600
2015679335
2016644329
2017422223

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 50,000 miles; the figures below show which parts of the car run ahead of that and which run behind.

The airbag system accounts for 13.8% of complaints (1,249 reports, 793 of them with a mileage figure), with a median of 67,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 46,753 and 90,000 miles.

The engine accounts for 11.8% of complaints (1,070 reports, 775 of them with a mileage figure), with a median of 55,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 29,000 and 79,900 miles.

The transmission and driveline accounts for 11.5% of complaints (1,039 reports, 585 of them with a mileage figure), and it fails early — a median of 32,000 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 12,000 and 60,628 miles.

The electrical system accounts for 10.7% of complaints (968 reports, 706 of them with a mileage figure), with a median of 58,300 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 31,000 and 84,000 miles.

The steering accounts for 10.6% of complaints (956 reports, 608 of them with a mileage figure), with a median of 45,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 24,000 and 74,100 miles.

The brakes account for 6.5% of complaints (584 reports, 205 of them with a mileage figure), with a median of 49,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 26,835 and 76,000 miles.

Differences between model years

Within this generation, complaint volume is not constant across model years. The 2012 model year drew the most — 1,285 complaints — while 2017 drew the fewest at 422. The median year sits at 792.

Recalls and what they cover

NHTSA records 21 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 the airbag system (9), the transmission and driveline (3), the hydraulic brake circuit (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 9,053 complaints filed against this generation, 274 reported a crash; 386 reported a fire; 253 reported an injury; 8 reported a fatality. Crash-involved reports represent 3.0% 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, failures on this generation are spread rather than concentrated: the middle half falls between 25,000 and 77,100 miles, with a median of 50,000. There is no single mileage threshold to watch, which means condition and maintenance records are more informative than the odometer.

On inspection, the airbag system and the engine are where this generation's reports concentrate, so those are the areas worth a specific look. The engine in particular shows a median failure mileage of 55,000, 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

Engine (3.6L Pentastar cylinder head) 2012-2013

Left-bank (cylinders 1-3) cylinder head failure, typically a valve seat or valve guide defect producing a persistent tick, misfire and check-engine light. Chrysler issued an extended warranty on affected heads to 150,000 miles for early Pentastar builds.

Engine (3.8L V6) 2007-2011

Excessive oil consumption and piston/ring wear with associated cold-start tick on the 3.8L EGH V6; also weak on power relative to the vehicle's weight, especially in the 4-door Unlimited.

Electrical (TIPM) 2007-2013

Totally Integrated Power Module failure causing no-start, fuel pump relay sticking on or off, stalling, and random accessory operation. A widely reported Chrysler-wide defect of this era.

Front suspension / steering 2007-2018

'Death wobble' front-end oscillation from worn track bar, ball joints and steering linkage on the solid front axle; the subject of sustained NHTSA complaint volume across the generation.

Front axle 2007-2018

Front axle inner 'C' and ball joint wear producing steering looseness and contributing to the wobble complaints, more pronounced on 4-door and larger-tire vehicles.

Recalls (21)

CampaignDateComponent
24V1960002024-04-04Air Bags:Frontal:Driver Clockspring/Spiral Cassette
19V6800002020-03-26Seat Belts:Front:Anchorage
19V0180002019-02-04Air Bags:Frontal:Passenger Side:Inflator Module
18V5240002018-10-02Electrical System:Wiring:Front Underhood
18V0980002018-03-22Exterior Lighting:Brake Lights:Switch
18V0210002018-02-28Air Bags:Frontal:Passenger Side:Inflator Module
16V3520002017-03-27Air Bags:Frontal:Passenger Side:Inflator Module
16V8490002017-01-12Fuel System, Gasoline:Storage:Tank Assembly
16V2900002016-12-14Air Bags:Frontal:Driver Side:Inflator Module
16V7340002016-11-10Air Bags:Frontal:Sensor/Control Module-Inactive
16V2880002016-08-11Air Bags:Frontal:Driver Side:Inflator Module
14V6310002015-03-03Visibility:Rearview Mirrors/Devices:Exterior
14V6320002014-10-23Tires:Pressure Monitoring And Regulating Systems
13V2340002013-09-23Power Train:Automatic Transmission:Cooling Unit And Lines
13V1760002013-06-10Air Bags
12V2160002012-07-16Power Train:Automatic Transmission
11V3150002011-07-04Steering:Column
11V1450002011-03-24Power Train:Axle Assembly
10V2360002010-12-06Service Brakes, Hydraulic
10V3150002010-08-16Service Brakes, Hydraulic:Foundation Components:Master Cylinder
11V528000Air Bags:Frontal

What owners reported

2007 · 20 miles · Engine
THE SEAT BELTS IN THE BACK WHEN BUCKLING ARE LOCKED. MAKING IT HARD TO MOVE AROUND. SINCE DAY THE I BOUGHT THE CAR. TOOK IT TO THE DEALERSHIP FOR REPAIR AND THEY SAID THEY FOUND NOTHING. ONLY AFTER MY WARRANTIES WERE UP DID THEY SAY THEY WOULD FIX THE PROBLEM IF I PAID FOR THE LABOR. THE ENGINE HAS AN OIL CONSUMPTION PROBLEM ALSO FROM THE FIRST DAY I BOUGHT IT, THE DEALERSHIP HAS COVERED IT UP…
2007 · 20 miles · Seat Belts
THE SEAT BELTS IN THE BACK WHEN BUCKLING ARE LOCKED. MAKING IT HARD TO MOVE AROUND. SINCE DAY THE I BOUGHT THE CAR. TOOK IT TO THE DEALERSHIP FOR REPAIR AND THEY SAID THEY FOUND NOTHING. ONLY AFTER MY WARRANTIES WERE UP DID THEY SAY THEY WOULD FIX THE PROBLEM IF I PAID FOR THE LABOR. THE ENGINE HAS AN OIL CONSUMPTION PROBLEM ALSO FROM THE FIRST DAY I BOUGHT IT, THE DEALERSHIP HAS COVERED IT UP…
2007 · 32 miles · Electrical System
TL* THE CONTACT OWNS A 2007 JEEP WRANGLER. WHILE DRIVING THE VEHICLE WOULD STALL WITHOUT ANY PRIOR WARNINGS. THE VEHICLE WAS TAKEN TO THE DEALER FOR INSPECTION. THE TECHNICIAN COULD NOT LOCATE ANY DIAGNOSTIC ERROR CODES THEREFORE NO REPAIRS WERE MADE. THE FAILURE MILEAGE WAS 20. THE CURRENT MILEAGE WAS 44000. UPDATED 11/04/09. *LJ THE CONSUMER STATED THE DEALER PERFORMED THE REPAIR PER THE RECAL…
2007 · 32 miles · Engine And Engine Cooling
TL* THE CONTACT OWNS A 2007 JEEP WRANGLER. WHILE DRIVING THE VEHICLE WOULD STALL WITHOUT ANY PRIOR WARNINGS. THE VEHICLE WAS TAKEN TO THE DEALER FOR INSPECTION. THE TECHNICIAN COULD NOT LOCATE ANY DIAGNOSTIC ERROR CODES THEREFORE NO REPAIRS WERE MADE. THE FAILURE MILEAGE WAS 20. THE CURRENT MILEAGE WAS 44000. UPDATED 11/04/09. *LJ THE CONSUMER STATED THE DEALER PERFORMED THE REPAIR PER THE RECAL…

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