2020 Acura RDX engine problems
53 owner complaints filed with NHTSA name the engine on the 2020 Acura RDX — 15% of all complaints for this model year.
What owners report
“The vehicle’s keyless access/security and body control system malfunctioned. An authorized Acura dealer previously diagnosed water intrusion from blocked panoramic sunroof drains, including water reaching the Body Control Module (BCM) Multiplex Control Unit. The dealer reported that this was…”
filed Aug 22, 2026
“My RDX experienced a water-intrusion failure involving the panoramic sunroof drainage system and associated electrical components. An authorized Acura dealer diagnosed the right-front sunroof drain as backed up/overflowing, allowing water to reach the Body Control Module (BCM/Multiplex Control…”
filed Aug 21, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Service Bulletin - Oil leak at the cam chain tensioner inspection cover due to and insufficient sealant adhesion on the inspection cover.
B25-049 · Service Bulletin/Repair Instructions · issued Sep 17, 2025
Engine problems in other RDX years
| Year | Reports | Share |
|---|---|---|
| 2025 RDX | 1 | 3% |
| 2023 RDX | 4 | 19% |
| 2022 RDX | 1 | 3% |
| 2021 RDX | 20 | 18% |
| 2019 RDX | 89 | 20% |
| 2018 RDX | 11 | 14% |
| 2017 RDX | 11 | 15% |
| 2016 RDX | 7 | 18% |
| 2015 RDX | 3 | 1% |
| 2014 RDX | 2 | 1% |
| 2013 RDX | 2 | 1% |
| 2010 RDX | 2 | 9% |
Other reported problem areas on the 2020 Acura RDX
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.