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Transmission and drivetrainPart report

1999 Jeep Wrangler Transmission and drivetrain Problems

Complaints
20about this part
Share
9%of 213 total for the year
Median mileage
52,000miles
Trend
StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.

NHTSA recorded 20 complaints about the transmission and drivetrain of the 1999 Jeep Wrangler, 9% of the 213 complaints for this model year. Where a mileage was given, the median is 52,000 miles. 4 of these say a crash was involved, according to the filers.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Driving my 1999 Jeep Wrangler sport 4.0 l6 5-speed manual at appx. 65 MPH a slight vibration came from the gas pedal. I pulled over, after crawling under the vehicle I found the front drive shaft loose at the joint connecting to my stock np231j transfer case. Figuring it was just a worn u-joint I continued on my way at a much slower speed appx. 35 MPH for about 300 yards there was a loud pop along with metal and dirt flying from under the Jeep which made me pull over once again this time out of control and ending up in the ditch. …”

NHTSA complaint #10464861, filed 2012-07, 135,695 miles

“The automatic transimission has been a problem since the car was bought brand new in november of 1999. First is the experience of, on occasion the car not starting while in park. The first time it happened I called chrysler road side assistance, and they informed me just to put it in nuetral whenever that happened and it would start ok. I have had to do that very often. I assumed it was not a big deal. I have never been able to engage the lo 4 wheel drive mechanism, but have not had the need for it, hence never bothered to complain about it. …”

NHTSA complaint #10023444, filed 2003-06, 1,200 miles

“Vehicle was running and without warning it popped out of park into reverse and started surging. Consumer jumped out of the way before the vehicle hit an airplane on the field. The consumer stated that vehicle was parked in the grass on flat land. The consumer had the vehicle towed to the dealer for inspection.”

NHTSA complaint #10079492, filed 2004-07, 52,000 miles

“1999 Jeep Wrangler had multiple rear differential failures before 70k miles. *** no answer required*** the original drive train was rebuilt using original mopar parts. The drive train failed for the second time at 69000 mile after only 11000 miles of use. This time the dealer refuses to provide any financial assistance. The vehicle had other failures which include water leaks, drive train seals failure, electrical failures, multiple ABS failures, air bag and seat belt problems, and the paint was peeling off the vehicle.”

NHTSA complaint #10148712, filed 2006-01, 69,500 miles

“I have a 1999 Jeep Wrangler sahara v.6. 5 speed manual transmission. My Jeep is in great shape however I started having steering problems. I noticed around the apex on both sides the frame had rusted away. I had it a new piece welded in place and it was working great. Then I noticed my transmission was having issues. I thought I was going to have to buy another transmission when it was discovered the plate that lies below the transmission was rusted from the frame and not supporting the transmission. I had that welded too. …”

NHTSA complaint #10604427, filed 2014-06

Related service bulletins

Transmission and drivetrain: other model years

YearComplaintsShare of year
202618%
20251318%
202417924%
20235114%
20226817%
202114916%
2020478%
20198011%
201817710%
20175016%
20167416%
20155111%
20148813%
201323035%
201228234%
2011408%
20106810%
2009349%
2008678%
2007468%
2006578%
2005416%
20042614%
20032222%
20021413%
20012314%
20007028%
1999209%
19983312%
19975313%
19953216%
19941913%
19931312%
19921114%
1991811%
199056%
1989711%
198824%
198725%

Other parts of the 1999 Jeep Wrangler

Electrical system
53 complaints
Engine cooling
50 complaints
Air bags
22 complaints
Body and structure
21 complaints
Brakes
14 complaints
Visibility (wipers, defrost, mirrors)
13 complaints
Other or unknown
9 complaints
Seat belts
7 complaints
Fuel system
6 complaints
Vehicle speed control
6 complaints
Suspension
5 complaints
Tires
5 complaints

← All problems reported for the 1999 Jeep Wrangler

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology