2015 Infiniti Q50: jerking or lurching

Filed Jul 21, 2025 · Steering · MO

Adaptive steering clicks and looses control. Steering wheel jerks back when self aligning. There was a recall for this I believe in June 2016. For 2015 infinity Q50’s but my VIN says that it wasn’t recalled but is the exact description of what is happening.

Filed Mar 19, 2025 · Acceleration, Transmission · LA

While driving on the interstate and coming over an overpass there was unavoidable debris located in the road. Immediately after passing over the debris there was a loud noise followed by jerking and the RPM's revved up almost like the car was in neutral. I let up off of the accelerator and then tried to accelerate again. The car would not go faster than 30mph and will not shift out of 3rd gear. I had the car towed to the dealership and the diagnostic codes reflected vehicle speed sensor and there was no physical damage that was visible under the car. I was told that the problem was in the transmission and that it would need to be changed and given an estimate that totaled over $10,000. I was also told by the service advisor that this is a known issue with the Infiniti Q50. After doing researching this a common problem and the consumer is having to pay out of pocket if the warranty has ended. This incident could have ended badly while doing 70mph on the interstate and the car just quits moving. With all of the complaints that I have read over in regards to the transmission issues yet no action has been taken to investigate this problem. It is obliviously a manufacturing issue and the consumer should not have to pay out of pocket for defective transmissions. This luxury car was not a cheap purchase. Very disappointed that with so many cases an investigation has never been done. Infiniti should be held accountable and a recall should be issued for this problem. I will not stop until I can get through to someone that can help.

Filed Jan 12, 2022 · Acceleration · GA

When on the highway my transmission slipped then went out and wouldn’t accelerate, without any warning or sign of trouble beforehand. I scrambled to pull over and it started to accelerate again. It struggled to shift in 1st gear and second but despite going over 40 mph it would not shift to third gear. I could feel it slipping/sputtering when letting up on the accelerator and jerk when I press on the brakes. The engine will continue to rev high at lower speed. My check engine light came on and gave two codes, P0720 and P0500. I took this to my mechanic and he advised the valve body that houses the AT speed sensor be replaced and I likely need a new transmission. On a forum for Q50s another Infiniti owner said a dealer parts manager told them that Infiniti was aware there was a problem, and that the valve body was hard to come by and part of the delay was due to them redesigning the part to assure it didn't happen again. They suggested filing a case with Infiniti in case they were to issue some type of recall or TSB. He said out of the 750+ parts that were on backorder, his was #130 in line, and it still took over 2 months to receive. IF this is a known issue it is dangerous and should be addressed

Filed Mar 28, 2021 · Electrical, Engine · AL

My car pause and jerks then stops. This is the second time this has happened after being fixed. The mechanic said they had a recall on the 2016 models for this but not the 2015 but had to correct many of the 2015 models. The check engine light came on after it stopped. I was on the interstate the last time when it stopped. I am afraid that it might happen again without any warning. This is a life threatening defect that infiniti needs to correct asap.

Filed Sep 21, 2020 · Acceleration, Electrical · 65,000 miles · FL

Tl* the contact owns a 2015 infiniti q50. The contact stated while driving approximately 70 MPH, the vehicle jerked, shifted gears, reduced speed, the odometer flashed, the check engine warning light illuminated, and the heating and air conditioning system went from cold to hot. The contact got off the nearest exit and pulled over and waited a while before continuing to drive home to park the vehicle. The contact stated that a diagnostic code reader retrieved dtc code: p0720 (output speed sensor). The contact contacted infiniti of tampa (4600 n dale mabry hwy, tampa, fl 33614; (813) 694-1579) and was informed that the camshaft needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the issue. The approximate failure mileage was 65,000.

Filed Oct 10, 2017 · Tires · 17,000 miles · NY

Tl* the contact owns a 2015 infiniti q50, equipped with dunlop tires, tire line: sp sport, tire size: 245/40runflat/19 94w n/a, and dot number: u28t. The contact stated that while driving about 40 MPH, the vehicle struck "a bump or a pothole" causing the vehicle to jerk. The flat tire warning message illuminated. The contact pulled over and noticed that the side wall of the front passenger's side tire ripped in blisters. The contact stated that the failure recurred three months later, while driving about 50 MPH. The vehicle struck a bump and the flat tire warning light illuminated. The vehicle was pulled over and the contact noticed that the side wall of front driver's side tire ripped in blisters. The vehicle was taken to the dealer at: infiniti of bayside, queens, ny, 718‑819‑8400, and was referred to the tire manufacturer at: 800‑321‑2136. The manufacturer offered a pro-rated reimbursement for one tire only. The vehicle manufacturer was contacted at: 800‑662‑6200 and referred the contact back to the dealer. The vehicle was not repaired. The failure mileage was about 17,000.