2018 Acura MDX problems & reliability
165 owner complaints filed with NHTSA for the 2018 Acura MDX, alongside 10 safety recall campaigns. Last verified Sep 21, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several components.
2 complaints report injuries (3 injured).
Federal crash records (FARS 2020–2023): 2018 Acura MDX vehicles were involved in 11 fatal crashes with 3 occupant deaths. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Engine → | 35 | 21% |
| Fuel/propulsion System → | 28 | 17% |
| Electrical System → | 27 | 16% |
| Power Train → | 23 | 14% |
| Forward Collision Avoidance → | 22 | 13% |
| Fuel System, Gasoline → | 22 | 13% |
| Engine and Engine Cooling → | 19 | 12% |
| Unknown / Other | 19 | 12% |
| Lane Departure → | 17 | 10% |
| Vehicle Speed Control → | 14 | 8% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
All 25 reported components →Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Mileage when problems occurred
Among the 38 complaints that included a usable odometer reading, the median reported incident mileage was 35,000 miles (middle 50% between 12,750 and 61,250 miles).
Complaints by incident year
What owners report
“The vehicle was being driven and the dashboard was lit up with all the systems in error related to ACC (Adaptive Cruise Control)”
Forward Collision Avoidance · filed Sep 14, 2026
“driver seat rocking. Acura stated 2018 recall for this issue was vin number specific and does not include my vehicle however this is the issue with my driver seat. they advise repairs at my expense.”
Seats · filed Sep 1, 2026
“The contact owns a 2018 Acura MDX. The contact stated that while driving at various speeds, the vehicle went into LIMP Mode and failed to exceed 35-60 MPH. The check engine warning light was flashing. The driver pulled over to the side of the road. The vehicle was restarted, reset, and operated as intended. The…”
Engine and Engine Cooling · filed Aug 24, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- Engine failure
Preliminary Evaluation PE25008 · opened Aug 20, 2025 · open
- No Restart After Auto Start/Stop Engages
Engineering Analysis EA25004 · opened Mar 26, 2025 · open
- Engine failure
Recall Query RQ24013 · opened Nov 8, 2024 · closed Aug 20, 2025
Technical service bulletins
139 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2018 Acura MDX. The 10 most recent:
Owner Notification Letter - Under certain circumstances, after coming to a stop and the idle stop feature engaging, the vehicle may not automatically restart. Acura is providing a product update with a new PGM-FI…
ONL6AX01302026 · Other · issued Jan 31, 2026
Service Bulletin - An uneven sealing surface allows moisture to enter the inner taillight(s), causing one or both of the inner taillights not to work.
B25-003 · Service Bulletin/Repair Instructions · issued Sep 4, 2025
Service Bulletin - An uneven sealing surface allows moisture to enter the inner taillight(s), causing one or both of the inner taillights not to work.
B25-003 · Service Bulletin/Repair Instructions · issued Jul 9, 2025
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, 2025
Owner Notification Letter - An uneven sealing surface allows moisture to enter the inner taillight(s), causing one or both of the inner taillights not to work.
ONL6L806042025 Form · Other · issued Jun 5, 2025
Owner Notification Letter - An uneven sealing surface allows moisture to enter the inner taillight(s), causing one or both of the inner taillights not to work.
ONL6L806042025 Letter · Other · issued Jun 5, 2025
Service Bulletin - An uneven sealing surface allows moisture to enter the inner taillight(s), causing one or both of the inner taillights not to work.
B25-003 · Service Bulletin/Repair Instructions · issued Apr 18, 2025
Service 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
Service Bulletin - The AWD warning light is on potentially due to water intrusion into the rear differential pump motor connector area that corrodes the terminals.
B24-022 · Service Bulletin/Repair Instructions · issued Nov 22, 2024
Owner Notification Letter - Under certain circumstances, after coming to a stop and the idle stop feature engaging, the vehicle may not automatically restart. Acura is providing a product update with a new PGM-FI…
ONL6AX05292024 · Other · issued May 29, 2024
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2018 Acura MDX has 10 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2018 Acura MDX?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Among complaints with usable mileage, the median reported incident mileage was 35,000 miles. This does not predict when a particular vehicle will develop a problem.