TJ (3rd generation) · TJ (LJ for 2004-2006 Unlimited long wheelbase) · 3,915 complaints, 2,446 with mileage
Owners filed 3,915 complaints with NHTSA about the 1997–2006 Jeep Wrangler, and 2,446 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 78,000 miles. The median is 49,000 miles.
The most-reported areas are the fuel system (20.6% of complaints, typically around 42,000 miles), the transmission and driveline (9.7% of complaints, typically around 34,195 miles), the engine and its cooling system (8.5% of complaints, typically around 52,150 miles).
1 recall campaign cover this generation.
| System | Complaints | Share | Typical mileage | Middle half |
|---|---|---|---|---|
| Fuel System, Gasoline | 805 | 20.6% | 42,000 | 28,887–59,800 |
| Power Train | 380 | 9.7% | 34,195 | 7,000–73,629 |
| Engine And Engine Cooling | 334 | 8.5% | 52,150 | 30,000–73,000 |
| Suspension | 328 | 8.4% | 50,000 | 25,000–95,440 |
| Steering | 308 | 7.9% | 40,000 | 20,000–65,000 |
| Electrical System | 268 | 6.8% | 69,500 | 40,000–115,000 |
| Structure | 237 | 6.1% | 93,000 | 60,413–135,000 |
| Fuel/Propulsion System | 232 | 5.9% | 53,000 | 36,500–80,000 |
| Air Bags | 184 | 4.7% | 63,700 | 40,020–95,000 |
| Service Brakes, Hydraulic | 144 | 3.7% | 23,000 | 3,226–42,000 |
| Year | Complaints | With mileage |
|---|---|---|
| 1997 | 548 | 98 |
| 1998 | 401 | 126 |
| 1999 | 262 | 134 |
| 2000 | 311 | 141 |
| 2001 | 235 | 139 |
| 2002 | 139 | 108 |
| 2003 | 130 | 105 |
| 2004 | 281 | 239 |
| 2005 | 756 | 617 |
| 2006 | 852 | 739 |
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 49,000 miles; the figures below show which parts of the car run ahead of that and which run behind.
The fuel system accounts for 20.6% of complaints (805 reports, 624 of them with a mileage figure), with a median of 42,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 28,887 and 59,800 miles.
The transmission and driveline accounts for 9.7% of complaints (380 reports, 169 of them with a mileage figure), with a median of 34,195 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 7,000 and 73,629 miles.
The engine and its cooling system accounts for 8.5% of complaints (334 reports, 128 of them with a mileage figure), with a median of 52,150 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 30,000 and 73,000 miles.
The suspension accounts for 8.4% of complaints (328 reports, 251 of them with a mileage figure), with a median of 50,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 25,000 and 95,440 miles.
The steering accounts for 7.9% of complaints (308 reports, 229 of them with a mileage figure), with a median of 40,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 20,000 and 65,000 miles.
The electrical system accounts for 6.8% of complaints (268 reports, 155 of them with a mileage figure), with a median of 69,500 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 40,000 and 115,000 miles.
Within this generation, complaint volume is not constant across model years. The 2006 model year drew the most — 852 complaints — while 2003 drew the fewest at 130. The median year sits at 296.
That makes 2006 an outlier: roughly 2.9 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.
NHTSA records 1 recall campaign 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.
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.
Of the 3,915 complaints filed against this generation, 220 reported a crash; 116 reported a fire; 218 reported an injury; 18 reported a fatality. Crash-involved reports represent 5.6% 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.
For a buyer, failures on this generation are spread rather than concentrated: the middle half falls between 25,000 and 78,000 miles, with a median of 49,000. There is no single mileage threshold to watch, which means condition and maintenance records are more informative than the odometer.
On inspection, the fuel system and the transmission and driveline are where this generation's reports concentrate, so those are the areas worth a specific look. The transmission and driveline in particular shows a median failure mileage of 34,195, 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.
Cylinder head casting number 0331 is prone to cracking between the number 3 exhaust valve seat and the coolant jacket, causing coolant loss into the cylinder, misfire and overheating. The 0331 casting was used across roughly the 2000-2004 build window.
'Death wobble' - violent self-sustaining oscillation of the solid front axle triggered at speed by a road input, driven by worn track bar bushings, ball joints, tie rod ends or steering damper on the coil-sprung solid-axle front end.
4.0L exhaust manifold cracking, typically at the rear runners, causing an exhaust leak and cold-start tick.
Corrosion of floor pans, rocker panels and frame rails in salt regions, commonly around the skid plate crossmember.
| Campaign | Date | Component |
|---|---|---|
| 15V222000 | 2015-08-31 | Power Train:Clutch Assembly:Pedal/Hand Lever(Motorcycle) |