Check engine light came on, reads reduced power and is causing problems accelerating
NHTSA ODI 11633048
Home · 2018 Buick Regal Tourx · Complaints
These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.
4 of 14 complaints match · Engine · clear filters
Check engine light came on, reads reduced power and is causing problems accelerating
NHTSA ODI 11633048
My check engine light came on along with my traction control light, and "Reduced Engine Power" popped up. This is connected to a recall on this vehicle for a connector at the throttle pedal.
NHTSA ODI 11632118
RECALL NOT COMPLETED? The previous GM Buick Dealership I went to, appears they will not or can not confirm that the Buick June, 2022 Recall (Braking issue) work was done in October, 2022 at Key Chevrolet Buick GM in South Burlington, VT. I have contacted both the Dealership and Manufacturer (Buick) current Case # 9-10190079245 twice and Buick (Corporate) is trying to contact the Key GM Buick Dealership to confirm the Recall work has been done and if done, then remove the still pending Recall notice that is still showing the Recall still needs to be done.
NHTSA ODI 11529135
@ 40,000 miles The Buick Regal Tour X is making a loud humming noise from shifting gears from the transmission and a noise near the engine, when slowing down to 5 mph, loud humming noise can be heard. I took the car to GM service department and the mechanic told me he couldn't find anything wrong. I told him Yet, Yet?? I want to be proactive on this transmission issue.
NHTSA ODI 11494054
Working with the data? Download all 14 complaints as CSV · fetched from NHTSA July 21, 2026