Owner complaints, recalls, fuel economy and safety ratings from public NHTSA and EPA data, updated Oct 17, 2026.
Fuel economy
19–22 mpgcombined; city 16–19, highway 26–29; every version of this model year
Five years of fuel
$14,760–$21,180U.S. average; Ohio $13,190–$19,960 at local prices; every version of this model year; fuel only, not other costs of owning it; 15,000 miles a year, at EIA fuel prices for the week of Oct 12, 2026
NHTSA overall safety rating
Not ratedNHTSA has no overall rating for this year
NHTSA's VIN data lists these trims for the 2006 Monte Carlo. A trim's engine and numbers are shown as its own only where EPA names versions after the trim and no other version could be it; "seen with" means a source shows that engine on the trim, not that it was the only one. Recalls and complaints cover the whole model year: whether a recall applies to a car depends on its VIN, on NHTSA's recall lookup.
Owners have filed 113 complaints with NHTSA about the 2006 Monte Carlo. These are unverified owner reports, counted by the part of the car they name; one complaint can name several parts. Counts aren't adjusted for how many were sold, so they don't show how reliable a car is.
Complaints by part of the car
Part
Complaints
Crashes
Fires
Injuries
Electrical system
29
1
0
1
Power train
27
0
0
2
Steering
21
2
0
0
Air bags
10
8
0
12
Tires
9
0
0
0
Engine
6
0
0
0
Engine and engine cooling
6
0
0
0
Seat belts
5
0
0
0
Unknown or other
4
0
0
0
Visibility
4
0
0
0
Structure
3
1
0
4
Vehicle speed control
3
1
0
1
12 more parts
Electronic stability control (ESC)
2
1
0
4
Fuel system, gasoline
2
0
0
0
Latches/locks/linkages
2
0
0
0
Service brakes
2
1
0
0
Suspension
2
0
0
0
Traction control system
2
0
0
0
Wheels
2
0
0
0
Equipment
1
0
0
0
Exterior lighting
1
0
0
0
Seats
1
0
0
0
Service brakes, hydraulic
1
0
0
0
Visibility/wiper
1
0
0
0
Complaints by model year
Newer years have had less time to collect complaints, and counts aren't adjusted for sales, so a shorter bar doesn't mean a more reliable year.
NHTSA lists 1 recall campaign for the 2006 Monte Carlo over its history. Campaigns are matched by model and year, so each one may apply to a given car, and its repair may already be done: check a VIN on NHTSA's recall lookup for the open recalls on that exact car.
This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if applicable), should also be removed from the key ring. General Motors LLC (GM) is recalling certain model year 2005-2009 Buick LaCrosse, 2006-2011 Buick Lucerne, 2000-2005 Cadillac DeVille, 2006-2011 Cadillac DTS, 2006-2014 Chevrolet Impala, and 2006-2007 Chevrolet Monte Carlo vehicles. In the affected vehicles, the weight on the key ring and road conditions or some other jarring event may cause the ignition switch to move out of the run position, turning off the engine.
Risk: If the key is not in the run position, the air bags may not deploy if the vehicle is involved in a crash, increasing the risk of injury. Additionally, a key knocked out of the run position will cause loss of engine power, power steering, and power braking, increasing the risk of a vehicle crash.
Remedy: GM will notify owners, and dealers will install two key rings and an insert in the key slot or a cover over the key head on all ignition keys, free of charge. The recall began on September 23, 2014. Owners may contact General Motors customer service at 1-800-521-7300 (Buick), 1-800-458-8006 (Cadillac), and 1-800-222-1020 (Chevrolet). GM's number for this recall is 14299.
Carmakers sent NHTSA 771 service bulletins and notices that cover the 2006 Monte Carlo, the latest on Jul 18, 2025. They tell dealers how to fix known issues.
The parts they mention most: equipment (338), electrical system (156), engine and engine cooling (95), power train (51), equipment adaptive/mobility (50).
NHTSA defect investigations
Opening an investigation isn't a finding of a defect. Outcomes are as NHTSA's summary states them. A recall is shown as an investigation's outcome only where NHTSA's summary names it; other recalls NHTSA's file lists with it are marked as listed, not caused.
Investigation
Part
Opened
Status
Preliminary evaluation PE09025 POWER STEERING FLUID LEAKS - FIRES · covers 2 makes
The owner's manual gives the oil and how often to change it. We show oil facts only once we've checked them against the manual, and we haven't yet for the 2006 Monte Carlo.
NHTSA manufacturer communications, file of Oct 17, 2026
NHTSA defect investigations, file of Oct 17, 2026
NHTSA 5-Star Safety Ratings, file of Aug 7, 2026
U.S. Energy Information Administration, file of Oct 12, 2026
Fuel cost: EPA mpg with fuel prices for the week of Oct 12, 2026 and electricity prices for Jul 2026. Source: U.S. Energy Information Administration (Oct 2026). Complaints are unverified reports owners filed with NHTSA. About the data