8th generation (W-body) · GM W-body (GMX210) · 6,285 complaints, 4,414 with mileage
Owners filed 6,285 complaints with NHTSA about the 2000–2005 Chevrolet Impala, and 4,414 of them record the mileage at which the failure happened. That is enough to show not just what fails, but when.
Failures are spread across the mileage range, with the middle half between 47,700 and 120,000 miles. The median is 80,000 miles.
The most-reported areas are the electrical system (32.6% of complaints, typically around 80,000 miles), the exterior lighting (8.9% of complaints, typically around 80,000 miles), the engine and its cooling system (8.8% of complaints, typically around 74,900 miles).
3 recall campaigns cover this generation.
| System | Complaints | Share | Typical mileage | Middle half |
|---|---|---|---|---|
| Electrical System | 2,047 | 32.6% | 80,000 | 54,130–116,840 |
| Exterior Lighting | 561 | 8.9% | 80,000 | 51,000–115,000 |
| Engine And Engine Cooling | 553 | 8.8% | 74,900 | 48,350–110,000 |
| Steering | 423 | 6.7% | 54,828 | 30,000–100,000 |
| Engine | 403 | 6.4% | 130,000 | 98,000–170,000 |
| Service Brakes, Hydraulic | 327 | 5.2% | 38,000 | 18,000–62,379 |
| Power Train | 283 | 4.5% | 63,665 | 37,000–108,000 |
| Air Bags | 281 | 4.5% | 85,500 | 39,700–125,000 |
| Fuel System, Gasoline | 158 | 2.5% | 75,990 | 45,000–106,984 |
| Vehicle Speed Control | 143 | 2.3% | 80,000 | 52,000–129,057 |
| Year | Complaints | With mileage |
|---|---|---|
| 2000 | 1,128 | 556 |
| 2001 | 959 | 616 |
| 2002 | 1,077 | 777 |
| 2003 | 935 | 684 |
| 2004 | 1,375 | 1,112 |
| 2005 | 811 | 669 |
Complaints about this generation are not spread evenly across the vehicle, and the systems that generate the most of them do not all fail at the same point in a car's life. The median failure across all systems here is 80,000 miles; the figures below show which parts of the car run ahead of that and which run behind.
The electrical system accounts for 32.6% of complaints (2,047 reports, 1,560 of them with a mileage figure), with a median of 80,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 54,130 and 116,840 miles.
A single system taking 32.6% of all complaints is a concentration worth noting. It means that for this generation, most of what owners reported came back to one area of the car rather than being distributed across many small faults.
The exterior lighting accounts for 8.9% of complaints (561 reports, 453 of them with a mileage figure), with a median of 80,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 51,000 and 115,000 miles.
The engine and its cooling system accounts for 8.8% of complaints (553 reports, 355 of them with a mileage figure), with a median of 74,900 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 48,350 and 110,000 miles.
The steering accounts for 6.7% of complaints (423 reports, 278 of them with a mileage figure), with a median of 54,828 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 30,000 and 100,000 miles.
The engine accounts for 6.4% of complaints (403 reports, 277 of them with a mileage figure), and it fails late — a median of 130,000 miles, considerably beyond the vehicle's overall median. That pattern is consistent with normal service life rather than a defect, though it matters for anyone buying an example already near that mileage. The middle half of these reports falls between 98,000 and 170,000 miles.
The hydraulic brake circuit accounts for 5.2% of complaints (327 reports, 222 of them with a mileage figure), and it fails early — a median of 38,000 miles, well before the vehicle's overall median. Failures clustered this far below the rest of the car usually point to a design or manufacturing problem rather than wear, because wear does not selectively target one system on low-mileage examples. The middle half of these reports falls between 18,000 and 62,379 miles.
Within this generation, complaint volume is not constant across model years. The 2004 model year drew the most — 1,375 complaints — while 2005 drew the fewest at 811. The median year sits at 1,018.
NHTSA records 3 recall campaigns covering vehicles in this generation. A recall means the manufacturer or the regulator concluded there was a safety defect or a standard was not met, and that a free remedy is owed to owners — including second and later owners.
The campaigns cluster around the engine and its cooling system (2), the electrical system (1). Repeated recalls against the same area of the car generally mean the first remedy did not fully resolve the underlying problem.
Recall status is specific to the individual vehicle, not the model. Checking a VIN against NHTSA's lookup is free and takes under a minute, and it is the only way to know whether a particular car has had the work done.
Of the 6,285 complaints filed against this generation, 366 reported a crash; 323 reported a fire; 358 reported an injury; 4 reported a fatality. Crash-involved reports represent 5.8% of the total.
These are owner-reported outcomes, not verified investigations, and they are not adjusted for how many of these vehicles are on the road. They are included because the distinction between a fault that strands a car and a fault that causes a collision is the one that matters most, and it is not visible in a complaint count alone.
For a buyer, failures on this generation are spread rather than concentrated: the middle half falls between 47,700 and 120,000 miles, with a median of 80,000. There is no single mileage threshold to watch, which means condition and maintenance records are more informative than the odometer.
On inspection, the electrical system and the exterior lighting are where this generation's reports concentrate, so those are the areas worth a specific look. The electrical system in particular shows a median failure mileage of 80,000, which gives a concrete number to compare against the odometer of any car you are considering.
None of this is a substitute for a pre-purchase inspection on the individual car. Aggregate patterns describe a population; the example in front of you has its own history.
Lower intake manifold gasket failure on the 3.4L and 3.8L V6. The plastic-framed gasket degrades in contact with Dex-Cool coolant, leaking coolant externally and into the oil; often accompanied by upper plenum warping on the 3.8L.
Key can rotate out of the run position under load from a heavy key ring or road impact, shutting off the engine and disabling airbags; covered by GM's 2014 ignition-key recall campaign for W-body cars.
Turn signal / multifunction switch and body control module faults causing inoperative signals and interior lighting.
| Campaign | Date | Component |
|---|---|---|
| 15V701000 | 2016-02-19 | Engine And Engine Cooling:Exhaust System:Manifold/Header/Muffler/Tail Pipe |
| 15V201000 | 2015-04-24 | Engine And Engine Cooling:Engine |
| 14V400000 | 2014-09-08 | Electrical System:Ignition |