This page covers 2 recalls, 54 owner complaints and EPA fuel economy for the 2010 Buick Lucerne.
18–20 mpg combined
11.8–13.1 L/100km
Large Cars
Fuel economy data from fueleconomy.gov (EPA / U.S. Dept. of Energy). Annual cost based on 15,000 mi/yr at 55% city driving and current fuel prices. MPG is U.S. gallons; L/100km converted. Ranges reflect the 3 tested variants for this model year.
The most consistent pattern owners of the 2010 Buick Lucerne report involves the electrical system, specifically the rear fuse block located under the back seat. Multiple owners describe the fuse block overheating, melting wire connectors, and producing a burning smell in the cabin, often with no warning lights illuminated beforehand. Several report no-start conditions tied to this same area, with the fuel pump relay implicated when the fuse block overheats or loses connection, in some cases returning the car to a dealer multiple times before the root cause was identified. The fuel and propulsion system draws the second-highest complaint volume, with starting failures being the most common symptom described. Steering complaints, mostly involving power steering fluid leaks, round out the top three reported systems. A handful of owners also describe the engine shutting off unexpectedly at highway speeds, with the vehicle entering a reduced-power mode before restarting on its own after sitting for several minutes.
54
Total Complaints
2
Crash-Related
2
Fire-Related
1
With Injuries
By System
The 2010 Buick Lucerne has 2 recalls, both affecting V8-equipped models: an electrical cable rubs against the power steering return line, wearing through it and causing a fluid leak that can result in loss of power steering or an engine compartment fire.
When the starter or alternator cable contacts the power steering return line, it gradually wears through the line and allows fluid to escape. That fluid loss can make the steering wheel significantly harder to turn, raising the risk of a crash, and fluid dripping onto hot engine components can ignite a fire.
At a glance
What can fail
The starter or alternator cable rubs against the power steering return line. Over time, the cable can wear through the line and cause power steering fluid to leak.
What the fix does
Dealers will secure and reroute the cables to stop them from contacting the power steering line. The repair is free.
We may earn a commission for purchases made through these links.
Complaints are owner-reported and reflect individual experiences, not confirmed defects. They are distinct from recalls. Data sourced from the national vehicle safety complaint database. See trending complaints →
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
On V8 engines, the starter or alternator cable may rub against the power steering return line. This rubbing can wear through the line, causing power steering fluid to leak and loss of power steering assist. It can also expose bare wire, risking battery drain and potential fire.
What the fix does
Dealers will secure the cable and reroute it away from the power steering line to prevent contact and rubbing.
Summarized — see the official notice for exact wording, dates, and contacts.
