1st generation (ZJ) · ZJ · 6,574 complaints, 1,021 with mileage
Owners filed 6,574 complaints with NHTSA about the 1993–1998 Jeep Grand Cherokee, and 1,021 of them record the mileage at which the failure happened. That is enough to show not just what fails, but when.
67% of failures occur beyond 100,000 miles — a wear pattern. The car generally reaches substantial mileage before trouble starts.
The most-reported areas are the transmission and driveline (24.2% of complaints, typically around 100,000 miles), the hydraulic brake circuit (14.1% of complaints, typically around 82,000 miles), the fuel system (7.9% of complaints, typically around 105,068 miles).
1 recall campaign cover this generation.
| System | Complaints | Share | Typical mileage | Middle half |
|---|---|---|---|---|
| Power Train | 1,591 | 24.2% | 100,000 | 76,000–144,200 |
| Service Brakes, Hydraulic | 925 | 14.1% | 82,000 | 56,000–105,000 |
| Fuel System, Gasoline | 517 | 7.9% | 105,068 | 72,000–154,000 |
| Engine And Engine Cooling | 485 | 7.4% | 128,000 | 89,000–160,000 |
| Structure | 355 | 5.4% | 140,000 | 110,000–180,500 |
| Electrical System | 330 | 5.0% | 141,500 | 100,000–180,000 |
| Vehicle Speed Control | 308 | 4.7% | 126,000 | 100,000–160,000 |
| Steering | 275 | 4.2% | 140,000 | 95,000–164,000 |
| Suspension | 231 | 3.5% | 141,000 | 95,000–189,000 |
| Air Bags | 199 | 3.0% | 119,500 | 90,216–160,000 |
| Year | Complaints | With mileage |
|---|---|---|
| 1993 | 784 | 59 |
| 1994 | 775 | 105 |
| 1995 | 983 | 112 |
| 1996 | 1,250 | 202 |
| 1997 | 1,433 | 277 |
| 1998 | 1,349 | 266 |
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 122,000 miles; the figures below show which parts of the car run ahead of that and which run behind.
The transmission and driveline accounts for 24.2% of complaints (1,591 reports, 120 of them with a mileage figure), with a median of 100,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 76,000 and 144,200 miles.
The hydraulic brake circuit accounts for 14.1% of complaints (925 reports, 47 of them with a mileage figure), with a median of 82,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 56,000 and 105,000 miles.
The fuel system accounts for 7.9% of complaints (517 reports, 92 of them with a mileage figure), with a median of 105,068 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 72,000 and 154,000 miles.
The engine and its cooling system accounts for 7.4% of complaints (485 reports, 111 of them with a mileage figure), with a median of 128,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 89,000 and 160,000 miles.
Body structure accounts for 5.4% of complaints (355 reports, 57 of them with a mileage figure), with a median of 140,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 110,000 and 180,500 miles.
The electrical system accounts for 5.0% of complaints (330 reports, 114 of them with a mileage figure), with a median of 141,500 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 100,000 and 180,000 miles.
Within this generation, complaint volume is not constant across model years. The 1997 model year drew the most — 1,433 complaints — while 1994 drew the fewest at 775. The median year sits at 1,116.
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 6,574 complaints filed against this generation, 849 reported a crash; 192 reported a fire; 637 reported an injury; 52 reported a fatality. Crash-involved reports represent 12.9% 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, a late-failure pattern shifts the question from whether to when. 67% of reported failures occur beyond 100,000 miles, so an example approaching that figure is approaching the range where other owners started reporting problems. The middle half of all failures falls between 89,000 and 163,506 miles.
On inspection, the transmission and driveline and the hydraulic brake circuit are where this generation's reports concentrate, so those are the areas worth a specific look. The hydraulic brake circuit in particular shows a median failure mileage of 82,000, 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.
'Death wobble' — violent front-end oscillation after a bump, caused by worn track bar bushings, tie-rod ends, ball joints and a failing steering damper on the solid front axle.
Corrosion of floor pans, rocker panels and rear quarter panels in salt-belt use.
42RE/44RE 4-speed automatic overdrive and governor-pressure solenoid failures producing slipping and erratic shifts.
| Campaign | Date | Component |
|---|---|---|
| 13V252000 | 2014-08-01 | Structure |