NHTSA lists 3 safety recalls and 54 owner complaints for the 2006 Buick Terraza. Most complaints involve structure (11) and electrical system (11). The EPA rates it 17–19 mpg combined.
THE BRAUN CORPORATION HAS NOTIFIED NHTSA ABOUT A DEFECT IN CERTAIN MODEL YEAR 2005-2008 GENERAL MOTORS MOBILITY CONVERSION, HANDICAPPED ACCESSIBLE LOW FLOOR MINIVANS. DURING CONVERSION, THE DRIVER OR PASSENGER SIDE TRAILING ARM MODIFICATION MAY NOT HAVE BEEN ADEQUATELY WELDED.
DORMAN IS RECALLING 979 STEERING KNUCKLES, DORMAN P/NOS. 697-902 AND 697-903, SOLD UNDER DORMAN'S "OE SOLUTIONS<SUP>TM</SUP>" BRAND NAME, AND NAPA P/NOS. 7-8502 AND 7-8503 WHICH WERE SOLD FOR REPLACEMENT USE ON THE VARIOUS VEHICLES LISTED ABOVE. A POTENTIAL MATERIAL OR DESIGN DEFECT COULD RESULT IN THE STEERING KNUCKLE BREAKING IN THE HUB AREA.
CERTAIN TRUCKS AND SPORT UTILITY VEHICLES FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 110, "TIRE SELECTION AND RIMS." THESE VEHICLES WERE SHIPPED WITH TIRE AND LOADING INFORMATION LABELS LISTING AN INACCCURATE VEHICLE CAPACITY WEIGHT.
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
“THE AUTOMATIC SLIDING DOORS WON'T CLOSE. IT OPENS UP AGAIN WHEN THE CLOSING SLIDE DOOR TOUCHES THE FRAME. THIS HAPPENS EVERY A FEW DAYS!! VERY FRUSTRATING. AND I SAW THERE ARE 4 OR 5 SIMILAR COMPLIANT REPORTS ON THIS ALREADY. SO LOOKS LIKE IT DOES HAPPENS ON A NUMBER OF VEHICLES ALREADY, NOT AN ISOLATED INCIDENT. *TR”
“The contact owns a 2006 Buick Terraza. The contact stated that the antitheft alarm engaged inadvertently, causing the vehicle to shutoff while driving. The START/STOP Disabled message was displayed. The vehicle was taken to the dealer where it was diagnosed that a steering wiring cable might be detached. The vehicle was repaired; however, the failure reoccurred twice while driving. The vehicle was towed to the dealer where unknown repairs were completed. The contact also stated that the electronic stability control and the traction control warning lights had illuminated while driving. Additionally, the contact stated that the rear driver's side door handle was fractured. The contact also stated that the rear passenger's side sliding door handle was fractured and she noticed that the sliding door wiring cable had detached, causing the door lock chime to engage while driving as the door would no longer close completely. The manufacturer was notified of the failure but did not provide any assistance. The vehicle was not diagnosed or repaired. The failure mileage was approximately 149,000.”
“TL* THE CONTACT OWNS A 2006 BUICK TERRAZA. WHILE DRIVING VARIOUS SPEEDS, THE VEHICLE STALLED WITHOUT WARNING ON MORE THAN ONE OCCASION. IN ADDITION, THE TRACTION CONTROL, ESC, ABS, AND ANTI-THEFT INDICATORS ILLUMINATED RANDOMLY. A DEALER WAS NOT MADE AWARE OF THE FAILURES. THE MANUFACTURER WAS MADE AWARE OF THE FAILURES AND PROVIDED THE CONTACT WITH CASE NUMBER: 8-442-863-4921. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE FAILURE MILEAGE WAS 150,000.”
Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.
| Version | City | Hwy | Comb. | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|
| Terraza FWD Auto 4-spd, 6 cyl, 3.5 L · Front-Wheel Drive | 16 | 23 | 19 | $3,400 | 468 |
| Terraza FWD Auto 4-spd, 6 cyl, 3.9 L · Front-Wheel Drive | 16 | 23 | 19 | $3,400 | 468 |
| Terraza AWD Auto 4-spd, 6 cyl, 3.5 L · 4-Wheel or All-Wheel Drive | 15 | 21 | 17 | $3,800 | 523 |
| Item | Miles | Time | Note |
|---|---|---|---|
| Engine oil & filter | 5,000–10,000 mi | 6–12 months | Follow the oil-life monitor if fitted |
| Tire rotation | 5,000–7,500 mi | Every oil change | Check pressure monthly |
| Engine air filter | 15,000–30,000 mi | 1–2 years | Sooner in dusty areas |
| Cabin air filter | 15,000–25,000 mi | 1–2 years | |
| Brake fluid | — | 2–3 years | Absorbs moisture over time |
| Coolant | 60,000–100,000 mi | 5–10 years | Long-life coolants last longer |
| Spark plugs | 60,000–100,000 mi | — | Iridium/platinum plugs at the long end |
| 12V battery | — | 3–5 years | Heat shortens battery life |
3 safety recalls as of Oct 27, 2026, according to NHTSA. Recall repairs are free at a dealer. Check your VIN to see whether your car is included and whether the repair was done.
Owners filed 54 complaints with NHTSA. The most-cited components are structure (11), electrical system (11), electronic stability control (esc) (11). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
The EPA rates the 2006 Buick Terraza at 17–19 mpg combined, depending on engine and drivetrain (3 versions rated).