2018 Alfa Romeo Giulia electrical system problems
19 owner complaints filed with NHTSA name the electrical system on the 2018 Alfa Romeo Giulia — 22% of all complaints for this model year.
What owners report
“Alfa Romeo Giulia (and Stelvio) models have an exposed powertrain ground strap under the vehicle body. Because of the exposed position of the ground strap it is prone to corrosion which causes the fine wire braid of the ground strap to become brittle and break. Breaking of the strands of wire is…”
filed Dec 10, 2024
“The contact owns a 2018 Alfa Romeo Giulia. The contact stated that while operating the vehicle, the horn was inoperable and there was no audible sound while depressed. The contact stated that the failure was intermittent. The vehicle was taken to the local mechanic who diagnosed that the horn…”
filed Aug 6, 2024
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Body Control Module (BCM) may indicate an inaccurate fuel level that displays higher than…Campaign 19V551000 · Jul 25, 2019
- These engines may misfire causing the catalytic converter to overheat, possibly resulting…Campaign 18V636000 · Sep 14, 2018
Related service bulletins
Emissions Recall 22D - On Board Diagnostics - Dealer Notification (Revision 1)
22D Combo Rev1 · Warranty Program/Extension · issued Sep 10, 2026Emissions Recall 22D - On Board Diagnostics - Dealer Notification
22D Combo · Warranty Program/Extension · issued Sep 2, 2026Start Stop Charging Warning Lamp Illuminated On, Intelligent Battery Sensor (IBS) State of Charge (SOC) Inaccurate, Battery Charging Message, Presence of IBS related Diagnostic Trouble Codes (DTCs), or Battery Warning…
S1408000384 REV.J · Service Bulletin/Repair Instructions · issued Mar 4, 2026Start Stop Charging Warning Lamp Illuminated On, Intelligent Battery Sensor (IBS) State of Charge (SOC) Inaccurate, Battery Charging Message, Presence of IBS Related Diagnostic Trouble Codes (DTCs), or Battery Warning…
S1408000384 REV.I · Service Bulletin/Repair Instructions · issued Feb 14, 2026Customer Satisfaction Notification 64C – Powertrain Control Module Wiring Harness- Dealer Notification
64C Combo · Service Campaign · issued Jan 6, 2026
Electrical System problems in other Giulia years
| Year | Reports | Share |
|---|---|---|
| 2019 Giulia | 6 | 13% |
| 2017 Giulia | 34 | 34% |
Other reported problem areas on the 2018 Alfa Romeo Giulia
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.