NHTSA Owner Complaint Log
This page lists owner-reported complaints filed with NHTSA for the 2021 Alfa Romeo Giulia. Complaints are unverified consumer reports submitted to NHTSA and do not by themselves prove a defect or defect rate.
Data synced from NHTSA on May 4, 2026
Return Coolant Hose from the turbo to the secondary coolant expansion tank had burst at 60,000 miles. Tube was completely brittle, snapped right in half. According to some forms online, this tube is "infamous" for snapping/breaking.
Front Panoramic sunroof suddenly shattered while the vehicle was in operation and in motion. Shards of glass went into the vehicle and scattered on the exterior. The sudden shattering cause an explosion like sound which startled the driver. It did not cause an accident but it could have.
The contact owns a 2021 Alfa Romeo Giulia. The contact stated that it was difficult refuel the fuel to full. Additionally, it was difficult to insert the nozzle into the fuel filler neck. There was no warning light illuminated. The vehicle was taken to a local dealer where it was diagnosed, and it was determined that the fuel vapor canister had become clogged and needed to be replaced. The vehicle was repaired. The contact stated that the vapor canister had been replaced twice within 4 years. The manufacturer was informed of the failure. The failure mileage was approximately 17,000.
I was driving on the highway with no one in front of me and not under any overpass or bridge when my sunroof exploded. It was a sunny day and there is no way anything struck the glass. The dealership is claiming outside sources caused the problem but there is no way. It spontaneously exploded.
The computer screen stays on with a check engine light
The contact owns a 2021 Alfa Romeo Giulia. The contact stated while on vacation driving 70 MPH, the vehicle started shaking and lost motive power. The check engine warning light illuminated. The contact was able to veer to the side of the road. The vehicle was towed to the dealer where it was diagnosed however, no issues were found. The vehicle software was reset; however, the failure reoccurred. The vehicle was taken to the dealer who informed the contact that the mechanic was unable to duplicate the failure. The contact notified a second dealer, Harper Alfa Romeo (10045 Parkside Dr, Knoxville, TN 37922) who informed him that the VIN was included in NHTSA Campaign Number: 21V878000 (Fuel System, Gasoline). The second dealer ordered the parts from the manufacturer. Upon returning from vacation, the contact followed up with the manufacturer regarding the shipment of parts. The manufacturer informed the contact the parts had been shipped to the first dealer located in Florida, where he was on vacation, 12 hours away from his residence. The manufacturer informed the contact that they could not resend parts to his local dealer in Tennessee and he would need to drive from Tennessee to Florida for the recall repair. The contact stated that the vehicle was not safe to drive to as it was experiencing a safety failure. The vehicle was not repaired. The failure mileage was approximately 9,000.
The contact owns a 2021 Alfa Romeo Giulia. The contact’s son was driving approximately 65 mph on the freeway when the transmission erroneously shifted to neutral and the vehicle would not accelerate. After stopping and restarting the vehicle, the vehicle operated as normal and the failure was no longer present. The vehicle was taken to the local dealer who indicated that a transmission software update was needed to prevent the failure from recurring. The software update was performed however, the failure recurred. The manufacturer was not notified of the failure. The failure mileage was 1,000.