There are 3 owner-reported fuel system complaints for the 2023 Toyota GR86in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
There are two fuel lines on each side of the engine bay, driver and passenger going into the injector rails. One of the fuel lines on the driver side is rubbing on the underside of the hood, when closed, causing marks, and potentially a burst on a fuel lines, causing fires. The fuel line on my car has rub marks, and visually “wearing it down”. No bursts, yet. There has been about 10-15 cases of GR86/BRZ (essentially the same car), with fires starting randomly from the engine bay on the driver side, rising the chances of this being a reality, and a VERY SERIOUS issue with these cars. And with this issue arising from FB groups, many other owners have come forward and confirmed the same rubbing marks on the same fuel line, or even in both on the same side instead of just the one.
Fuel lines in the engine bay are rubbing against the hood insulation and wearing down. The first generation GR86 fuel lines had sleeves compared to the second generation..
Fuel lines on right hand side of engine bay (when viewed from front of vehicle) show signs of wear due to contact with other components. I am unsure what components exactly, but wear significant enough to cause material removal from EPDM fuel line outer sleeve.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026