2018 model year · 1,050+ owner reports · Updated April 2026
According to Au7o's analysis of 1,050+ owner reports, the 2018 Acura NSX has 3 documented known issues, with 1 rated critical. The most serious is Hybrid System Warning Light and Limp Mode. The most commonly reported issue is 12V Auxiliary Battery Drain with 450 owner reports. Across all issues, repair costs range from $200 to $400. DIY maintenance guides at au7o.io.
On the 2017-2022 Acura NSX 3.5L Twin-Turbo V6 Hybrid, the NSX hybrid powertrain occasionally triggers a hybrid system warning that puts the vehicle into limp mode, limiting power output and disabling the front electric motors. The issue is often caused by a software conflict between the 9-speed DCT controller and the hybrid battery management system during aggressive driving or track use.
Have the dealer clear the hybrid system fault codes and update the PCM, TCM, and battery management module to the latest calibrations. Allow the hybrid battery to fully charge and balance by driving in Sport mode for 30+ minutes. If the warning recurs, the 12V auxiliary battery may need replacement as low voltage triggers false hybrid faults.
Parts and tips from 320+ owners who fixed this issue
On the 2017-2022 Acura NSX 3.5L Twin-Turbo V6 Hybrid, the NSX 12V auxiliary battery drains rapidly when the vehicle sits for more than 5-7 days, leaving the car unable to start. The complex hybrid system has multiple modules that remain active in standby mode, drawing significantly more parasitic current than a conventional vehicle. The small AGM battery is undersized for the parasitic load.
Connect a battery tender or maintainer whenever the NSX will sit for more than a few days. Replace the 12V battery every 2 years regardless of condition. Use a high-quality AGM battery with at least 40 Ah capacity. The battery is located in the front trunk — connect the maintainer to the underhood terminals for convenience.
Parts and tips from 450+ owners who fixed this issue
On the 2017-2022 Acura NSX 3.5L Twin-Turbo V6 Hybrid, the NSX 9-speed dual-clutch transmission exhibits shudder and judder during low-speed parking maneuvers and creeping in traffic. The dry clutch engagement at very low speeds produces a vibration similar to a manual transmission being ridden with the clutch, which is particularly noticeable in Quiet and Sport modes.
Update the TCM software to the latest Acura calibration which refines low-speed clutch engagement logic. The DCT adaptive learning may need to be reset after the update — the dealer performs this with the HDS diagnostic tool. Avoid riding the brake in traffic as the DCT prefers clear throttle or brake inputs.
Parts and tips from 280+ owners who fixed this issue
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
Honda (American Honda Motor Co.) is recalling certain 2013-2023 Honda Accord, Civic Coupe, Civic Sedan, Civic Hatchback, Civic Type R, CR-V, HR-V, Ridgeline, Odyssey, Acura ILX, MDX, MDX Hybrid, RDX, RLX, TLX, 2019-2022 Honda Insight, Passport, 2020 Honda CR-V Hybrid, 2018-2019 Honda Clarity PHEV, Fit, and 2015-2020 Honda Accord Hybrid, Pilot, Acura NSX vehicles. The fuel pump inside the fuel tank may fail.
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
Honda (American Honda Motor Co.) is recalling certain 2018-2019 Acura NSX, 2019 Acura RDX, RLX and RLX Sport Hybrid, 2018-2019 Honda Accord, Civic Hatchback, Civic Type R and HR-V, 2019-2020 Insight and 2019 Fit vehicles. The low-pressure fuel pump inside the fuel tank may fail.
FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY
Honda (American Honda Motor Co.) is recalling certain 2017-2018 Acura NSX vehicles. The crossover pipe couplers between the left and right fuel tanks may leak.
Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.
Don't see your problem? Describe your symptoms to get a diagnosis, or get a full repair guide.
According to Au7o's analysis of 1,050+ owner reports, the 2018-2018 Acura NSX has 3 documented issues. The most frequently reported are: Hybrid System Warning Light and Limp Mode, 12V Auxiliary Battery Drain, 9-Speed DCT Shudder and Low-Speed Judder. Of these, 1 is rated critical and should be addressed promptly.
The 2018-2018 Acura NSX has 3 known issues documented across 1,050+ owner reports. 1 issue is rated critical: Hybrid System Warning Light and Limp Mode. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
Repair costs for known Acura NSX issues range from $200 to $400, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
The NSX hybrid powertrain occasionally triggers a hybrid system warning that puts the vehicle into limp mode, limiting power output and disabling the front electric motors. The issue is often caused by a software conflict between the 9-speed DCT controller and the hybrid battery… Severity: high.
The NSX 12V auxiliary battery drains rapidly when the vehicle sits for more than 5-7 days, leaving the car unable to start. The complex hybrid system has multiple modules that remain active in standby mode, drawing significantly more parasitic current than a conventional vehicle. Repairs typically run $200-$400. Severity: medium.
The NSX 9-speed dual-clutch transmission exhibits shudder and judder during low-speed parking maneuvers and creeping in traffic. The dry clutch engagement at very low speeds produces a vibration similar to a manual transmission being ridden with the clutch, which is particularly… Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
