2019 Acura MDX engine problems
47 owner complaints filed with NHTSA name the engine on the 2019 Acura MDX — 25% of all complaints for this model year.
What owners report
“issue occurring with automatic start/stop function. car stalls on occasion trying to restart, goes into neutral, even though battery is new and in good condition. hard to replicate and occurs randomly. car has to be turned off and on again. this is the 4th time this has happened over the course of…”
filed Sep 17, 2026
“I am reporting a recurring safety issue following the Acura rod bearing recall repair on my 2019 Acura MDX SH-AWD. The original recall resulted in catastrophic engine failure and Acura replaced the long block assembly. Since that repair, the vehicle has repeatedly failed and returned to the…”
filed May 6, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Due to a manufacturing error, the connecting rod bearing in the engine may wear and…Campaign 23V751000 · Nov 13, 2023
- Timing belt teeth may separate from the beltCampaign 19V298000 · Apr 12, 2019
Related service bulletins
Service Bulletin - Under certain circumstances, after coming to a stop and engaging idle stop the vehicle may not restart automatically due to excessive cylinder pressure and/or low cranking torque. Typically, the…
B23-002 · Service Bulletin/Repair Instructions · issued Jul 7, 2025Service Bulletin - The AWD warning light is on with one or more AWD DTCs having been set due to water intrusion into the electric oil pump motor connector area corrodes the terminals.
B24-022 · Service Bulletin/Repair Instructions · issued Feb 19, 2025
Engine problems in other MDX years
| Year | Reports | Share |
|---|---|---|
| 2025 MDX | 62 | 60% |
| 2024 MDX | 5 | 13% |
| 2023 MDX | 1 | 3% |
| 2022 MDX | 9 | 6% |
| 2020 MDX | 82 | 37% |
| 2018 MDX | 35 | 21% |
| 2017 MDX | 78 | 31% |
| 2016 MDX | 161 | 43% |
| 2015 MDX | 7 | 10% |
| 2014 MDX | 26 | 15% |
| 2013 MDX | 9 | 31% |
| 2012 MDX | 23 | 30% |
Other reported problem areas on the 2019 Acura MDX
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.