We purchased our 2022 Acura MDX with 7K miles on it. The transmission failed 2 years after it was purchased and required a full replacement. We knew there was an issue due to transmission fluid leaking from the vehicle. This was completed under warranty. It has been exactly 2 years since the full transmission replacement, and the dealer has just informed us the transmission is failing again and will require another FULL REPLACEMENT. Apparently there is a known issue with the transfer case splines on this model year, and the transfer case was not replaced by the dealer when they completed the first full transmission replacement.
Acura MDX transmission failure problems
221 of the 3,340 owner complaints about the Acura MDX describe complete transmission failure, most of them for the 2002 model year.
- owner complaints
- 221
- worst model year
- 2002
- typical repair cost reported
- $4,100
- typical mileage
- 92,000
Is there a fix? There are 2 recalls for this area of the car. See below
By model year
Often reported together
Check engine light 24Jerking 21Slipping 20Shudder 18Stalling 17Loss of power 17Hesitation 13Grinding brakes 13
Trouble codes mentioned
P07E4 1P07A8 1P07A4 1P07A2 1P0740 1P0730 1
What owners say
My 2022 Acura MDX lost motive power due to a transmission and transfer case failure at 64,306 miles. The transmission first became jumpy shifting from 1st to 2nd gear, then began whining and self-correcting. The jerking worsened in stop-and-go traffic until the vehicle became stuck in low gear and at times lost all gears completely. On the drive to the dealer, it nearly would not go into gear at all, and I did not think it was going to make it. The dealer (Crown Acura, [XXX], repair order #XXX) found the transmission fluid level low and the transfer case fluid dark, indicating the two fluids had been mixing. Diagnostic codes present were described by the dealer as transmission failure codes. After removing the transfer case, the dealer found brown sludge and worn connections between the transfer case and transmission, and noted the vehicle was not far from the relatively common failure of the transfer case. Both the transmission and the transfer case were replaced, and the transmission control module was reprogrammed with a new module. The vehicle was in the shop for approximately six weeks. The repair was covered under the certified pre-owned powertrain warranty at no cost to me. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Transmission Failed, Drive train spline is stripped, Safety basically vehicle would shake constanstly. It has been inspected by Acura of Berlin CT.
The car was being driven as normal and while at a stop light the car shut off and alerted the driver with a transmission error code. The car would not start for about 30 mins after the incident. When we took it to be looked at by the dealership we were told that it was related to code P07E4. The dealership reset the system and the code and returned the car back to me. They stated that if this happened again they would need to replace the transmission. My concern is that this happens again while driving at a higher speed or in an area where it is not safe such as a highway or major intersection or road. It's also concerning that a major component of a vehicle would need replacement at normal mileage which is currently at 111,400 miles.
While driving home on a Sunday afternoon, out of nowhere, a very loud pop sound happened followed by grinding. We were so worried that my husband pulled over thinking we had done major damage to the car somehow. Visual inspection under the car yielded nothing leaving us puzzled. No warning lights came on before, during, or after. We had it taken to the Acura dealership in Fairfield, Ohio. The car was still within warranty at this time, and they found nothing nor could they replicate the sound. My husband explained that it sounded to be transmission related. They chalked it up to a loose tie rod end which they “tightened” to solve all of our problems. We left the dealership and took the car home experiencing no further problems. Fast forward to the winter of that same year we realized that no matter what mode we put the car in we didn’t have AWD. Still no warning lights. The following spring, approximately 20,000 miles after experiencing the first loud pop and grind, we started getting error messages on our user dashboard. “All wheel drive system problem. Only front wheels may be powered. See your dealer”. We immediately scheduled a service appointment with the same Acura dealership. Within minutes of having the car examined on the lift the Acura certified technician found the problem to be the AWD transfer case and additionally the transmission. Stating we would need to replace both. They came back with a quote of approximately $18,000 for a new transmission, transfer case, labor, and all associated materials, for which we declined. Currently seeking help for recall as we do not believe a transmission/ transfer case should fail so quickly under normal driving circumstances.
Vehicle lost rear traction and leaking fluid from the transmission or front differential. Brought vehicle to dealer. They replaced transmission and transfer case.
Took car in for oil change and service tech saw that there was transmission fluid leaking. They then found that the splines were sheared off going into the transfer case and transmission. We received new transmission and transfer case. So far everything is working. We did not get any warning that there was an issue until we took it to the dealership. Putting in the case as this seems to be a common issue on type s models.
The splines to the transmission and front transfer case are worn and stripped and that is causing a bad transmission fluid leak. The fix for this unfortunately is to replace the Transmission and the Transfer case assy. I am not getting any support from Acura, as this is a known problem according to the dealer. Acura is not cooperating and the cost to repair is $14,000. I noticed a transmission fluid leak, so I took the vehicle into the Acura dealership. No check engine light came on, no notification that there was a catastrophic failure occurring to my car. I've been reading that this is happening to several other Acura vehicles as well.
Began to notice a knocking noise from lower engine compartment in late May 2026. No warning lamps, messages, or other symptoms. Dealer (Zimbrick Acura, Middleton WI) confirmed on 06/30/26 that noise was coming from transmission assembly. Dealer identified that the transmission was leaking fluid from the output shaft seal, and upon disassembly identified that the interfacing splines between the transmission and the rear wheel drive power take off unit (PTU) were failing. Dealer ultimately replaced transmission and PTU. This is the same issue as described in a previous petition (no. 11712885) but was identified prior to complete loss of all-wheel drive.
Transmission failed and light appeared. Speed reduced from 30 to 15. Acura stated they had to reset computer system and claimed when they started the car no lights shown and was able to reverse car. I was unable to reverse car, struggled and tugged feeling in the car. This is the 2nd time and they always repeat same solution no lights appeared and to reset system.
Related recalls
Power train: automatic transmission
- What is wrong
- American Honda Motor Co., Inc. (Honda) is recalling certain model year 2014 Acura MDX AWD vehicles manufactured May 6, 2013, through October 14, 2013. The bolts that attach the drive shaft to the automatic transmission transfer assembly may not have been properly tightened. As a result, the bolts could loosen possibly allowing the shaft to detach.
- Risk
- If the drive shaft detaches while driving it could cause excessive noise and possibly damage the vehicle, increasing the risk of a crash.
- Remedy
- Honda will notify owners, and dealers will inspect and tighten the drive shaft attaching bolts as necessary, free of charge. The recall began on July 3, 2014. Owners may contact Honda at 1‑800‑999‑1009 or visit their website at www.recalls.honda.com. Honda's recall number is JC8.
Recall number 13V571000 · Recall details
Power train: automatic transmission
- What is wrong
- On some mini vans, sport utility and passenger vehicles, certain operating conditions can result in heat build-up between the countershaft and secondary shaft second gears in the automatic transmission, eventually leading to gear tooth chipping or gear breakage.
- Risk
- Gear failure could result in transmission lockup, which could result in a crash.
- Remedy
- On vehicles with 15,000 miles or less, the dealer will update the transmission with a simple revision to the oil cooler return line to increase lubrication to the second gear. On vehicles with more than 15,000 miles, the dealer will inspect the transmission to identify gears that have already experienced discoloration due to overheating. If discoloration exists, the transmission will be replaced if discoloration is not present, the dealer will perform the revision to the oil cooler return line. The recall began on april 21, 2004, for pilot, odyssey, and mdx owners. Owners of the accord vehicles will start receiving letters on june 28, 2004, and on june 29, 2004, for owners of the tl and cl vehicles. Owners should contact honda at 1‑800‑999‑1009 or acura at 1‑800‑382‑2238.
Recall number 04V176000 · Recall details
Questions about the Acura MDX transmission failure
Which Acura MDX years have complete transmission failure problems?
The model years with the most reports are 2002 (42 complaints), 2001 (39 complaints) and 2003 (34 complaints).
How much does it cost to fix complete transmission failure on the Acura MDX?
Owners who mentioned a price put the repair at about $4,100 (median of 44 complaints that include a dollar amount). Costs vary with mileage, warranty and where the work is done.
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