2020 Acura TLX Reliability Report

Owners of the 2020 Acura TLX frequently report issues with the transmission, particularly harsh and delayed gear engagement, as well as the vehicle unexpectedly shifting into neutral. These symptoms are often noted at mileage as low as 7,900 and persist or worsen up to 29,000 miles. Additionally, some complaints highlight engine failures linked to connecting rod bearing issues, with one owner experiencing engine failure at 53,000 miles and again at 68,000 miles. Safety implications are evident, with reports of the vehicle shutting down randomly during acceleration and potential loss of control. Buyers should be aware of these issues, especially concerning the 9-speed transmission and engine reliability.

Owners report frequent issues with the 2020 Acura TLX's auto idle stop system, which can fail to restart the engine after being engaged at a stoplight, requiring the driver to shift into park and manually restart the car. This issue is noted at various mileages, including as low as 49,622 miles, and poses a safety risk by potentially causing traffic disruptions. Multiple complaints also describe malfunctions in several driver-assistance systems, such as the Collision Mitigation System, Adaptive Cruise Control, and Road Departure Mitigation System, with symptoms including unexpected automatic braking and system failure messages on the dash. These problems have persisted even after dealership repairs, indicating recurring electrical system issues. A used car buyer should be aware of these potential safety and reliability concerns.

Owners of the 2020 Acura TLX report issues related to unexpected vehicle behavior and recall complications. Multiple complaints describe the car stalling or hesitating, particularly after recall repairs, with one owner experiencing a complete power loss in traffic shortly after such a repair. Sudden unintended acceleration is also mentioned, with one report detailing an incident where the car accelerated unexpectedly in a parking lot, nearly causing a collision. Additionally, some owners note difficulty in resolving recall status discrepancies, affecting vehicle registration processes. These issues are reported across various mileages, with one car having over 99,000 miles and another just over 28,000 miles, highlighting potential safety risks such as loss of control and the possibility of crashes.

Owners report issues with the forward collision avoidance systems in the 2020 Acura TLX, particularly involving the Collision Mitigation Braking System (CMBS) and related components. Complaints frequently mention unexpected activation of the CMBS, causing sudden braking without an apparent cause, which could pose a safety risk if another vehicle is following closely. Additionally, multiple owners describe failures in the front camera system, which affects the cruise control, lane assist, and other safety features, often around 61,000 miles. Other symptoms include multiple warning lights for systems like adaptive cruise control and road departure mitigation, and in one case, a severe issue where the vehicle stalled and could not exceed 20 mph shortly after purchase. These reports suggest potential safety implications, especially in high-traffic situations.

Owners of the 2020 Acura TLX report issues with the vehicle's braking system, particularly involving defective rotors and parking brake malfunctions. One complaint describes warped rotors at approximately 15,000 miles, necessitating brake pumping at high speeds for effective stopping. Another complaint details the parking brake intermittently activating while driving, accompanied by dashboard warnings, which leads to unexpected braking and potential safety hazards. Both complaints highlight concerns about the vehicle's braking reliability, with one owner also mentioning unresolved electrical and software issues affecting the starting mechanism. These problems are particularly noted at relatively low mileage and may pose safety risks, especially in high-speed or construction zone scenarios.

Owners of the 2020 Acura TLX report issues related to the suspension, including a recall that has not been addressed for over two years due to unavailable parts, leading to concerns about vehicle safety. Complaints frequently mention symptoms such as stalling and cracking noises while driving, with one owner noting these issues arise when the vehicle is stopping. Another report describes a driver's side front wheel detaching while driving, despite the tire appearing normal beforehand. This incident occurred at approximately 830 miles, suggesting potential early-life failures. These issues present significant safety implications, including the risk of loss of control, which prospective buyers should consider.

Owners of the 2020 Acura TLX report issues with air bags, particularly involving parts availability and deployment failure during a crash. One complaint highlights a situation where the vehicle's air bags did not deploy after being rear-ended and pushed into another vehicle, resulting in injuries. This incident occurred at approximately 73,000 miles. Another owner mentions an inability to obtain necessary parts for air bag repairs at multiple locations. These reports suggest potential safety implications, especially regarding air bag non-deployment in collisions.