This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
View on NHTSA →2007 Buick Lucerne engine problems
moderate 14 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Failure mileage
Complaints
14
Recalls
0
Avg fix
$3,100
When does it fail?
Of the 14 engine complaints filed for the 2007 Buick Lucerne, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Among the 6 model years of Buick Lucerne in our records for engine problems, this one ranks #3 by owner-complaint volume.
No new NHTSA engine complaint has been filed on this vehicle in over 5 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
View on NHTSA →This service bulletin provides guidelines and diagnostic/repair information to technicians regarding vehicle engine oil consumption.
View on NHTSA →This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should be used to reduce c
View on NHTSA →This service bulletin provides technicians with information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage.
View on NHTSA →Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The main issue is unexpected engine shutdown while driving—it happens without warning, cranks but won't restart right away, and there's no check-engine code to help diagnose it. Owners lose power steering and brakes when it happens, making it a real safety hazard on the highway. Some cases cleared up after dealers tightened battery and ignition module connections or replaced the ignition control module or crankshaft sensor, but the problem kept coming back for others. GM issued Recall 14299 to address this, but parts weren't available for months, and some dealers only partially completed the work.
Engine vibration is another complaint—severe shaking at 1500 RPM even when parked—but dealers claim it's normal. Motor mounts are failing and cracking between 68,000 and 75,000 miles; one owner had three out of four mounts go bad. Around 80,000 miles, oil seal leaks show up (rear main seal and oil pressure sending unit). One vehicle needed a full engine replacement due to noise. One owner's Lucerne failed an emissions test with double the allowed carbon monoxide in the tailpipe, and the dealer bought the vehicle back.
Same Buick Lucerne engine reports on nearby years: 2006 · 2008
Failure modes owners describe
Engine stalling/shutdown while driving
Engine cuts out without warning while vehicle is in motion, loss of power steering and brakes, restart difficult or impossible initially.
When: Between 6,000 and 98,000 miles; multiple occurrences reported in some cases
Symptoms owners cite: Sudden engine cutoff while driving; Starter cranks but won't start; Restart after several minutes or multiple attempts; No diagnostic trouble codes present; Electrical systems remain functional during event
Repairs/costs cited: Dealers replaced ignition control module, cranks shaft sensor, and tightened loose/corroded battery and ignition module connections; one recall (GM 14299) involved parts availability issues
Recalls/TSBs owners mention: GM Recall 14299 issued; parts availability delayed; some dealers only partially completed recalls
Engine vibration at idle
Extreme vibration throughout vehicle at 1500 RPM while parked or driving; dealer claims vehicle designed this way.
When: Immediately upon purchase at 6,000 miles
Symptoms owners cite: Extreme vibration throughout vehicle at 1500 RPMs; Vibration present in Park and while driving; Excessive wear concern from sustained vibration
Repairs/costs cited: Dealer and GM unable to repair; no parts replacement attempted
Recalls/TSBs owners mention: Dealer stated vehicle working as designed
Motor mount fracture/failure
Engine motor mounts fracture and fail, causing engine movement and potential structural damage.
When: Between 68,000 and 75,000 miles
Symptoms owners cite: Fractured motor mount(s); Some owners report multiple mounts failing (3 out of 4)
Repairs/costs cited: Motor mount replacement; one owner reports 3–4 week parts delay due to manufacturer backlog
Recalls/TSBs owners mention: Parts availability delays noted; multiple dealer requests backlogged
Hydraulic fluid leakage from motor mount
Hydraulic fluid leaks from front motor mount assembly.
When: At 64,893 miles
Symptoms owners cite: Fluid leaking from under hood
Repairs/costs cited: Motor mount replacement resolved the leak
Oil pressure sending unit failure/oil leakage
Oil pressure sending unit leaks, and severe rear main seal leakage reported.
When: At 80,000–84,000 miles
Symptoms owners cite: Oil leaking from oil pressure sending unit; Severe rear main seal leakage
Repairs/costs cited: Engine replacement performed in at least one case
Engine compartment noise/knock
Abnormal noises from engine compartment; in one case interpreted as engine requiring full replacement.
When: At 84,000 miles
Symptoms owners cite: Noises from engine compartment
Repairs/costs cited: Engine replaced
Excessive tailpipe carbon monoxide emissions
Vehicle produced double the allowable carbon monoxide in tailpipe emissions.
When: <UNKNOWN>
Symptoms owners cite: Carbon monoxide emissions exceeding regulatory limits
Repairs/costs cited: Dealer bought back vehicle from consumer
Synthesized from 14 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
Oil leak from faulty seals.
I was driving down street and motor quit running. The motor did start and I continued on my journey. Later that same day, the engine stopped again and would not restart for several minute. After several tries it started. I did not have any more occurrences for several months. I received a notice that my Buick had been recalled, but that parts were not available. In a letter dated september…
Had engine trouble with your 2007 Buick Lucerne?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2007 Buick Lucerne?
It's a documented issue but not catastrophic. 14 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Across the 11 complaints that reported odometer mileage, most engine failures cluster between 58,000 and 84,000 miles, with the median around 68,000. A quarter of owners report trouble before 58,000; a quarter make it past 84,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2007/Buick/Lucerne.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.