DTC P0744 STORED IN THE TCM IF YOU CONFIRM DTC P0744 (TORQUE CONVERTER) is stored as PAST or CURRENT in the TCM. ACTION Follow the SERVICE PROCEDURE in this bulletin to reprogram the TCM.
full bulletin at NHTSA ↗2019 INFINITI Q50 powertrain problems
severe 5 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Complaints
5
Recalls
0
Avg fix
$2,500
1crash
When does it fail?
Of the 5 powertrain complaints filed for the 2019 INFINITI Q50, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Among the 5 model years of INFINITI Q50 in our records for powertrain problems, this one ranks #3 by owner-complaint volume.
No new NHTSA powertrain complaint has been filed on this vehicle in over 4 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering powertrain on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
DRIVE SHAFT BOOT SERVICE INFORMATION SERVICE INFORMATION If a Drive Shaft (Axle Shaft) Boot on an APPLIED VEHICLE is found to be leaking grease, AND There is no abnormal noise or obvious CV Joint risk due to water intrusion and/or complete grease loss, check for REPAIR KIT-DUST BOOT (cv Joint Boot Kit) availability. ï· If there is a REPAIR KIT-DUST BOOT (CV Joint Boot Kit) available for the vehicle being repaired, do NOT replace the axle. Install a new boot kit following the procedure in the ESM. o Refer to the ESM: TRANSMISSION & DRIVELINE > FRONT AXLE > REMOVAL AND INSTALLATION > FRONT DRIVE SHAFT BOOT o If the complete axle (drive shaft) is replaced when only a new boot is required, the
full bulletin at NHTSA ↗CLICKING NOISE FROM FRONT OR REAR AXLE DURING TAKE-OFF/ACCELERATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
full bulletin at NHTSA ↗CLICKING NOISE FROM FRONT OR REAR AXLE DURING TAKE-OFF/ACCELERATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
full bulletin at NHTSA ↗7-Speed Automatic Transmission (AT) Lock Up Retailer Inventory ***** Retailer Announcement ***** INFINITI is conducting a retailer inventory quality action on to inspect 6 specific 2019 INFINITI Q50 and 43 specific INFINITI QX80 vehicles identified in Service Comm, to inspect the transmission torque converter. Affected vehicles are subject to a stop sale and are either currently in retailer inventory or assigned and in transit to the retailer. ***** What Retailers Should Do ***** PLEASE FOLLOW THE ATTACHED INSPECTION INSTRUCTIONS 1. Verify if vehicles are affected by this quality action using Service Comm or DBS National Service History â Open Campaign I.D. P9331. ï· - New vehicles in ret
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
What owners are reporting 4 most recent
While vehicle is in “D” drive move the car would jerk likes its trying to shift/switch gears and jerk hard. It sounds like the issue would involve the transmission. Another occasion happened when I came to a complete stop, & then pressed on the gas, and the car jerks again then started to accelerate.
While driving vehicle if you suddenly stop vehicle would stop, however when applying pressure to gas pedal vehicle would not move, if foot is left on pedal car would jerk and then proceed forward. Unlike other vehicle after breaking hard vehicle would move without hesitation.
Unintended acceleration. Pulling into a parking space in a shopping center parking lot, after going over a speed bump and making a left hand turn into the spot the car accelerated and would not stop. Pushing on the brakes did not work. Car has a system to prevent crashing in to an object in front of the car but that did not work. The car struck a pole in the parking lot doing significant…
While operating the vehicle under normal driving conditions, the engine experienced a significant loss of power and reduced acceleration. The issue is believed to be related to turbocharger failure within the engine system. The loss of power created a safety concern, particularly when attempting to merge into traffic and maintain highway speeds. The vehicle did not respond as expected when…
Had powertrain trouble with your 2019 INFINITI Q50?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the powertrain problem on the 2019 INFINITI Q50?
It's a meaningful issue. 5 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $2,500.
At what mileage does the powertrain typically fail?
Based on the 5 complaints filed, powertrain issues most often appear around 2,000 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2019/INFINITI/Q50.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.