What breaks most · 2005 to 2007 model years
Buick Terraza problems by year
Owners have filed 207 safety complaints with NHTSA about the Buick Terraza across model years 2005 to 2007. One year stands out: 2005 for electrical system complaints.
- Years to check closely: 2005
- Complaints on file
- 2072005 to 2007, all trims
- Worst year
- 2005120 complaints
- Crashes reported
- 91 fires · 11 injuries · 0 deaths
- Typical failure mileage
- 43kMedian where owners gave mileage
- Recall campaigns
- 8Across the years shown
Complaints by model year
Raw filings with NHTSA, not adjusted for how many were sold.
| Model year | Complaints | Crashes | Recalls | Most-reported component |
|---|---|---|---|---|
| 120 | 5 | 3 | Electrical system (37) | |
| 54 | 4 | 3 | Body and structure (11) | |
| 33 | 0 | 2 | Body and structure (13) |
What fails on the 2005 Buick Terraza
| Component | Share of complaints | Filings | Crashes | Parts for this job |
|---|---|---|---|---|
| Electrical systemAlternators, starters and ignition | 31% |
37 | 2 | Shop electrical system parts for the 2005 Buick Terraza |
| Stability controlABS and wheel speed sensors | 18% |
22 | 0 | Shop stability control parts for the 2005 Buick Terraza |
| Latches and locksDoor latches and actuators | 13% |
16 | 2 | Shop latches and locks parts for the 2005 Buick Terraza |
| SteeringPower steering pumps, racks and hoses | 12% |
14 | 2 | Shop steering parts for the 2005 Buick Terraza |
| SuspensionStruts, springs and control arms | 10% |
12 | 0 | Shop suspension parts for the 2005 Buick Terraza |
| Body and structureDoors, latches and body hardware | 10% |
12 | 0 | Shop body and structure parts for the 2005 Buick Terraza |
| BrakesBrake pads, rotors and calipers | 9% |
11 | 1 | Shop brakes parts for the 2005 Buick Terraza |
| Traction Control System | 8% |
9 | 1 | — |
One complaint can name more than one component, so shares add to more than 100%. "Unknown or other" is NHTSA's uncategorized bucket and is shown but never ranked.
In owners' words
Complaint narratives as filed with NHTSA, trimmed for length.
-
Brakes felt uneasy stopping did not respond right away sometime had to pull a side to prevent accident. Alternator don't start at all and ABS light stayed on most of time many repairs done same problem at dealer ship.
How to read this page
Every figure comes from the National Highway Traffic Safety Administration's public complaint database, which holds every safety-related defect complaint filed by owners since 1995. We refresh it monthly and count each complaint once per component it names. Data through September 6, 2026.
NHTSA only accepts safety-related complaints. Rattles, paint, infotainment bugs and other annoyances are under-reported here, so this page is a map of what fails in ways owners consider dangerous, not a full reliability score.
Counts are raw. Use the year-over-year shape and the component mix, not the absolute numbers. Where a component maps to parts we stock, the row links to that category filtered to the year you are viewing. Air bag and seat belt complaints link to the recall checker instead, because those repairs are almost always covered.
Common questions
Which Buick Terraza years have the most problems?
By NHTSA complaint volume, 2005 carries the most filings on the Buick Terraza. The 2005 alone has 120 complaints, led by electrical system.
What is the most common Buick Terraza problem?
On the 2005 model year, the most-reported component is electrical system with 37 complaints. The table above lists the top components for every year.
At what mileage do Buick Terraza problems start?
The median mileage at failure across all Buick Terraza complaints that include mileage is about 43,000 miles. Older model years skew higher; the per-year figure is in the "at a glance" card.
Are these complaints verified?
No. NHTSA publishes complaints as submitted and does not investigate individual filings. Patterns across hundreds of complaints are meaningful; a single one is not.