Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2018 Subaru Crosstrek owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2018 Subaru Crosstrek. The contact stated that after a heavy rain and starting the vehicle several warning messages appeared on the instrument panel such as the assist braking and eyesight driver assist needed servicing. The contact also stated that the steering wheel was hard to maneuver. The vehicle was taken to the dealer who stated that a sensor in the wheel caused the failure. The sensor was replaced however, the failure reoccurred after heavy rains a month a later. The vehicle was taken back to the dealer who stated that the failure reoccurred due to the computer sensor in the rear driver's side wheel that was replaced was not reset. The contact stated that in December water was noticed on the driver's side floor and condensation after a heavy rain. The vehicle was taken to the dealer again where the failure was diagnosed as clogged sunroof draining ports. …
The contact owns a 2018 Subaru Crosstrek. The contact stated that while driving at various speeds, the vehicle would not properly accelerate. The failure occurred while operating the vehicle in warmer humid weather. The contact indicated that the failure occurred after the vehicle was serviced under the NHTSA Campaign Number: 21V264000 (Electrical System, Engine and Engine Cooling) which included replacing the and updating the EMC software. The manufacturer was notified of the failure, but no assistance was offered. The approximate failure mileage was 58,000. Consumer stated vehicle is still at the dealer.
The contact owns a 2018 Subaru Crosstrek. The contact stated while driving at approximately 50 MPH, the vehicle lost motive power and stalled. While driving on a ramp at slow speeds and depressing the accelerator pedal, the vehicle failed to accelerate and stalled. There were no warning lights illuminated. The vehicle was towed to the local dealer to be diagnosed. The contact was informed that the ignition fuse needed to be replaced. The fuse was replaced, and the vehicle was repaired. The manufacturer was contacted but provided no additional assistance. The approximate failure mileage was 39,000.
Hello, My subaru crosstrek 2018 has been brought to Subaru service departments in both CA and MA for the same issue. I have brought in my car 3-4 times for recurrent problems where the battery in the car dies. The battery has been replaced multiple times and I have brought it to Subaru Service departments both in Massachusetts and California, all of whom tell me that the battery needs to be replaced, over and over again. I called and filed a report with Subaru of America who directed me to a third party representative who deals with claims regarding subarus and their recurrent battery issues and was informed that my subaru is not eligible for reimbursement for recurrent issues with batterys, nor is it a model that is eligible for an extended warranty given the battery issues. This is a huge safety issue for me. …
On 06/26/26, while traveling at highway speeds, the vehicle suffered a sudden, catastrophic loss of motive power in active traffic due to a blown out/melted Cylinder 4 ignition coil. This unexpected engine failure forced raw fuel into the exhaust system, causing an immediate internal thermal meltdown of the catalytic converter, rendering the vehicle entirely undriveable and creating a severe highway safety hazard. This vehicle was previously serviced under NHTSA Campaign 21V264000 (Subaru Recall WRE-21), which was intended to permanently remedy an ECM software defect that over-energizes and melts the ignition coils. …
I noticed that my 2018 Subaru Crosstrek battery keeps draining when the car sits for several days (something that typically has not happened in the past until my son recently went off to college). I called AAA and they checked out the battery and indicated that the battery was good still, but was borderline. Would likely need to be replaced soon. Since it was the original battery and it would need to be replaced soon - I had them replace it. Even after the battery replacement - the battery drains when the car sits for a few days. I took the car in to my local Subaru dealer and they indicated parasitic drain from DCM is depleting the battery. They tried performing a factory reset on the DCM, but it was unsuccessful. The dealer quoted me $1200 to replace the DCM and had to order it. I also noticed several class-action lawsuits for other Subaru models (which sound like the same issue). …
All four tire pressure monitoring sensors failed on my 2018 Subaru Crosstrek at approximately 69,000 miles. The TPMS light remains illuminated, and the system no longer provides low-tire-pressure warnings. Subaru of America acknowledged the issue but declined full repair coverage, offering only partial "Goodwill assistance." Because TPMS is a federally mandated safety system, a full-system failure poses the risk of operating the vehicle without tire-pressure warning capability. The dealership quoted approximately $1,000 to restore the system. Subaru's decision to deny full coverage leaves the safety defect uncorrected.
Was told I needed a new ecm due to corrupt learning. My vehicles check engine light, traction control light, and cruise control all turned on/ stopped working. My vehicle has received all necessary maintenance in a timely manner, no missed oil changes and no accidents. The dealership stated it was due to damage but this can't be possible since the only place service has been completed was at the dealership, if it was damaged it would have been caused by the dealership. I have seen multiple threads online stating the same issue with their vehicle same model and similar years and the cost to replace is not cheap.
Battery drain when car isn't in use for 2 days went through 3 high CCA AGM batteries since I purchased new. also the manufacturer OEM battery. I only have 16,400 miles on the car and went through 4 total batteries. I had to pay for all the batteries and now I need another one.
-driving at moderate pace between 30 and 40 mph when vehicle engine shut off without warning. loss of power, no steering and all warning lights illuminated. difficulty getting vehicle over to side of road so not in way of traffic. braking was difficult once on side of road.
Related recalls
Electrical system › Software
Subaru of America, Inc. (Subaru) is recalling certain 2017-2019 Subaru Impreza and 2018-2019 Crosstrek vehicles. The Engine Control Module (ECM) may continue to power the ignition coil after the engine is shut off, causing a short circuit.
Remedy: Subaru will notify owners, and dealers will update the ECM software, replace the ignition coils and, if necessary, the front exhaust pipe, free of charge. Owner notification letters were mailed beginning June 1, 2021.
Electrical system › Software
Subaru of America, Inc. (Subaru) is recalling certain 2017-2019 Impreza and 2018-2019 Crosstrek vehicles. The Engine Control Module (ECM) may continue to power the ignition coil after the engine is shut off, which could result in a short circuit and blown fuse.
Remedy: Subaru will notify owners, and dealers will update the ECM software and inspect and replace the ignition coil, as necessary, free of charge.
Electrical complaints in other Crosstrek years
Frequently asked questions
How common are electrical problems on the 2018 Subaru Crosstrek?
NHTSA has 32 complaints about the electrical system of the 2018 Subaru Crosstrek, 16% of the model year's 195 complaints. The component named most often is wiring › fuses and circuit breakers (1 mentions).
Is there a recall for 2018 Subaru Crosstrek electrical problems?
Yes — NHTSA recall 21V-264 (software, Apr 15, 2021); NHTSA recall 19V-743 (software, Oct 18, 2019). Recall repairs are free at authorized dealers.
At what mileage do 2018 Subaru Crosstrek electrical problems start?
Half of the complaints with a recorded mileage happened before about 9,000 miles, and 71% before 25,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.