2020 Acura TLX engine problems
19 owner complaints filed with NHTSA name the engine on the 2020 Acura TLX — 31% of all complaints for this model year.
What owners report
“- The engine system failed and it is available for inspection -While driving on the highway at normal traffic speed, my vehicle suddenly developed a loud knocking noise and the check engine light lit up. Within moments, the engine lost power and became inoperable, leaving me unable to continue…”
filed Aug 5, 2026
“PE 25008 The engine knock started on 12/22/25. Motorcars Acura recommended get a case number & have the 2020 TLX towed in for a diagnostic. Online case # XXX Towed to Motorcars on 12/23/25. Talked to Michelle with customer relations & she was going to call Motorcars for info. Motorcars, without my…”
filed Feb 2, 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
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…
B22-009 · 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, 2025Service News - Due to On-Board Diagnostic (OBD) regulation change starting with 2019 vehicles, American Honda’s Variable Valve Timing and Lift Electronic Control (VTEC) On-Board Diagnostic monitors are now included in…
B24040A · Other · issued May 1, 2024Service Bulletin - The MIL comes on during vehicle operation due to variations in the purge control solenoid valve spring, the valve wears unevenly and intermittently sticks. This may result in setting DTC P0441…
B23-035 · Service Bulletin/Repair Instructions · issued Jan 10, 2024Service Bulletin - Due to variations in the purge control solenoid valve spring, the valve wears unevenly and intermittently sticks. This may result in setting DTC P0441 (Evaporative Emission (EVAP) System Purge Flow…
B23-035 · Service Bulletin/Repair Instructions · issued Dec 15, 2023
Engine problems in other TLX years
| Year | Reports | Share |
|---|---|---|
| 2022 TLX | 2 | 8% |
| 2021 TLX | 4 | 6% |
| 2019 TLX | 31 | 34% |
| 2018 TLX | 31 | 33% |
| 2017 TLX | 23 | 33% |
| 2016 TLX | 27 | 25% |
| 2015 TLX | 82 | 24% |
Other reported problem areas on the 2020 Acura TLX
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.