Owners have filed 12 complaints with NHTSA about this car, most about the fuel system and electrical. The 9 checks below target those problems, in the order you would do them at the car.
2021Tick items off on your phone at the car, or print it. Ticks stay on this device.
0/9 checked
2021 Cadillac XT4: inspection sheet
Before you go, or before you touch the car0/3
Engine off, key in hand0/2
Ask the seller not to warm the car up first0/3
At least 20 minutes, with some highway0/1
These checks are specific to this model year. For tires, body panels, fluids, and the other basics every used car needs, use the general inspection guide.
These years share the 2021's design and most of its parts, so their problems are the ones to look for on this car too.
Worth adding to your 2021 checks
Worth adding to your 2021 checks
Worth adding to your 2021 checks
NHTSA complaints for the 2021 Cadillac XT4, grouped by the part owners named. Open a row to read what goes wrong.
The engine shuts off while driving or cranks without starting, and owners trace it to a failed fuel pump power control module, sometimes with code P203F. Stalls happen at road speed with no warning, cutting power and making steering hard in traffic. Reported failures fall between about 13,765 and 34,536 miles, and some cars fail twice. Other cars click, stall soon after starting, or show a check-engine light that clears within hours. When the problem comes and goes, dealers find no stored codes and cannot diagnose it.
Electrical complaints include a sudden stall at 40 to 45 mph that would not restart. The dealer blamed the fuel pump control module and battery. One crash report describes a 5 mph rear-end collision at about 1,800 miles where the air bag did not deploy and the electrical safety features stopped working afterward. Another owner describes startups with no audio, no turn-signal sound, and no seatbelt warning chime, along with HVAC faults. That owner says two dealerships failed to fix it over almost 2 years.
Excerpts from complaints XT4 owners filed with NHTSA, as written. Listen for the same symptoms on your test drive.
Vehicle stalled on the road,coming to a total stop,very dangerous because of the trafic.Vehicle cranks but not start.Fuel pump power control module failed,code p203f.Take to Vera Cadillac dealer for repair .This happened 2 times ,at 13765 milles and 29342 milles
Filed with NHTSA, September 2025
Complaints for this year next to the average for the other model years, area by area.
The 2021 ranks joint fourth for owner complaints among 7 XT4 years, close to the average of the others. Newer years have had less time to collect complaints, so compare like with like.
Redesigns and mid-cycle updates change what can go wrong.
The 2021 is the third model year of the XT4's first generation (2019 on).
Cadillac updated the XT4 for 2024, so a 2021 does not have those changes.
What changed for 2024 (not on a 2021)
Recall repairs are free at any Cadillac dealer, but the seller may never have had them done. Check each campaign number against the VIN.
General Motors, LLC (GM) is recalling certain 2016-2021 Chevrolet Malibu and 2019-2021 Cadillac XT4 vehicles. The rear seat belt retractors may be improperly secured with loose or missing fasteners.
Risk: An improperly secured seat belt retractor may not function properly in a crash, increasing the risk of injury.
Fix: Dealers will inspect and tighten the rear seat belt retractors, as necessary, free of charge. Owner notification letters were mailed on September 17, 2021. Owners may contact Chevrolet customer service at 1-800-222-1020 and Cadillac customer service at 1-800-458-8006. GM's number for this recall is N212333380.
Cars shoppers compare with the Cadillac XT4, with their own 2021 checklists.
2021 owner complaints, side by side
