There are 1 owner-reported fuel system complaints for the 2018 Cadillac XTSin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
In November of 2022 I noticed that after I would fill my 2018 Cadillac with fuel that it was extremely difficult to start. This same issue I had over the previous 4 years with my 2012 Buick Lacrosse twice and each time it was a GM #12690512 Vapor canister Purge Valve each time at over $300.00 to correct the problem. I could leave the car running while fueling but that is not safe to do. I believe GM has a known issue with this item and is no longer using this part in their newer vehicles.
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