# 2019 Infiniti QX50 - Loss of power when hot **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** infiniti\ **Created:** [June 9, 2025, 9:30pm UTC](https://community.cartalk.com/t/2019-infiniti-qx50-loss-of-power-when-hot/200582 "2025-06-09T21:30:25Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![Edward23](https://avatars.discourse-cdn.com/v4/letter/e/e480ec/32.png) [@Edward23](https://community.cartalk.com/u/Edward23)\ **Post date:** [June 9, 2025, 9:30pm UTC](https://community.cartalk.com/t/2019-infiniti-qx50-loss-of-power-when-hot/200582/1 "2025-06-09T21:30:25Z")
Hi everyone, I’m having an issue with my 2019 Infiniti QX50. On hot days, the car noticeably loses power during acceleration — it feels like the turbo stops working properly. There’s no check engine light, but overall performance is clearly affected. Has anyone else experienced something similar, especially in warm weather? Could this be related to heat soak or a known issue with the turbo or engine? ---
**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\ **Post date:** [June 10, 2025, 1:34pm UTC](https://community.cartalk.com/t/2019-infiniti-qx50-loss-of-power-when-hot/200582/2 "2025-06-10T13:34:52Z")
I see a few possibilities. In very hot weather, the air contains a lower density of oxygen, and this results in a drop in power on all IC engines, whether they are turbocharged, or not. So, it’s possible that there is nothing wrong with the turbocharger. Or, if there really is something wrong with the turbocharger, it would likely be due to lubrication issues. Are you changing the engine oil on schedule, in terms of **both** odometer mileage and elapsed time? Are you using the correct specification full-synthetic 5w-30 oil? Is the oil up to the correct level on the dipstick? Also, are you using premium-grade gas? ---
**Author:** ![Cavell](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cavell/32/43396_2.png) [@Cavell](https://community.cartalk.com/u/Cavell)\ **Post date:** [June 10, 2025, 1:45pm UTC](https://community.cartalk.com/t/2019-infiniti-qx50-loss-of-power-when-hot/200582/3 "2025-06-10T13:45:13Z")
Ur car has VC motor. Very odd design. Easily could have issue with system as it’s very dependent on oil quality and pressure. If it runs “ok” otherwise I’d sell it. ---
**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\ **Post date:** [June 10, 2025, 3:54pm UTC](https://community.cartalk.com/t/2019-infiniti-qx50-loss-of-power-when-hot/200582/4 "2025-06-10T15:54:24Z")
And you would be the one to buy it cheap? ---
**Author:** ![davesmopar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/davesmopar/32/41750_2.png) [@davesmopar](https://community.cartalk.com/u/davesmopar)\ **Post date:** [June 10, 2025, 4:14pm UTC](https://community.cartalk.com/t/2019-infiniti-qx50-loss-of-power-when-hot/200582/5 "2025-06-10T16:14:36Z")
> [@Cavell](#): > > VC motor. In case someone doesn’t know what a VC engine is, it is a _ **Variable Compression** _ ratio engine… > **[VC-Turbo Engine | Innovation | Nissan Motor Corporation Global Website](https://www.nissan-global.com/EN/INNOVATION/TECHNOLOGY/ARCHIVE/VC_TURBO_ENGINE/)** > > Nissan’s VC-Turbo Engine: Nissan’s various technologies, including electrification, autonomous drive, connected car & service, mobility service, and energy management, are introduced. ---
**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\ **Post date:** [June 10, 2025, 4:19pm UTC](https://community.cartalk.com/t/2019-infiniti-qx50-loss-of-power-when-hot/200582/6 "2025-06-10T16:19:42Z")
> [@davesmopar](#): > > In case someone doesn’t know what a VC engine is, it is a _ **Variable Compression** _ ratio engine But, the ones manufactured in Vietnam are **V** iet **C** ong engines. 😉 ---
**Author:** ![Cavell](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cavell/32/43396_2.png) [@Cavell](https://community.cartalk.com/u/Cavell)\ **Post date:** [June 10, 2025, 5:26pm UTC](https://community.cartalk.com/t/2019-infiniti-qx50-loss-of-power-when-hot/200582/7 "2025-06-10T17:26:46Z")
Friend had one. No issues. Just got rid of it and has new merc gle350. Not VC. But it is turbo 4 and partial hybrid. Whole new can of worms. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [June 10, 2025, 6:46pm UTC](https://community.cartalk.com/t/2019-infiniti-qx50-loss-of-power-when-hot/200582/8 "2025-06-10T18:46:26Z")
Google this, lots of info: problems with nissan infiniti vc engine ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [June 10, 2025, 7:43pm UTC](https://community.cartalk.com/t/2019-infiniti-qx50-loss-of-power-when-hot/200582/9 "2025-06-10T19:43:13Z")
Check if there’s debris blocking the turbocharger intercooler. ![image](https://global.discourse-cdn.com/cartalk/original/3X/e/7/e719b757933d0a6d0a06aaad3a63eb6dcc9887aa.jpeg) Tester ---
**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\ **Post date:** [June 11, 2025, 12:26pm UTC](https://community.cartalk.com/t/2019-infiniti-qx50-loss-of-power-when-hot/200582/10 "2025-06-11T12:26:02Z")
Merc=Mercury [![](https://global.discourse-cdn.com/cartalk/original/3X/c/9/c9841db68ca89b36e674c17accf24ed7ca99a2fb.jpeg "Alan Jackson on Home Improvement") ](https://www.youtube.com/watch?v=9T3xTAJZiNc)