2006 Buick Terraza AWD: MPG and fuel economy

This page collects every fuel-economy figure the EPA publishes for the 2006 Buick Terraza AWD. Below you will find the headline combined, city, and highway MPG, the estimated annual fuel cost at three different driving levels, the tailpipe CO₂ emissions, and a full breakdown of the engine and drivetrain. If you want to know whether this generation got more or less efficient over the years, the year-over-year table further down covers every model year the EPA has rated.

Fuel economy at a glance

These are the EPA's official ratings for the 2006 Buick Terraza AWD. The numbers come from a standardised laboratory test cycle and are the same figures that appear on the window sticker of every new car. Real-world mileage varies with driving style, weather, fuel quality, and how heavily loaded the car is.

Combined MPG is a 55/45 weighted blend of the city and highway test cycles. The EPA uses it as the single number you can compare across the entire dataset, including hybrids and EVs (which use the equivalent MPGe figure).

How the 2006 Buick Terraza AWD compares

The 2006 Buick Terraza AWD returns 17 combined MPG, which is right around the 17 MPG class average for cars in the Minivan - 4WD class for the same model year.

Within the Minivan - 4WD class for the 2006 model year, the Buick Terraza AWD is the leader. No other car in the same class beat its 17 MPG rating. The bar chart below shows it alongside the class average and the average new car for some additional context.

For broader context, the average new car of the 2006 model year (across all classes) returns 18.6 MPG. Larger vehicles pull the all-cars average down, so do not use that figure on its own to judge a small car or a hybrid. The full list of the most efficient cars of the 2006 model year is on its own page.

Annual fuel cost across driving patterns

The headline annual fuel cost the EPA publishes assumes 15,000 miles of driving per year and a fuel mix of 55% city and 45% highway. The dollar figure is calculated using the EPA's current reference price for regular gasoline, which is $3.99/gallon. EPA updates that reference periodically rather than tracking live pump prices, so treat it as a window-sticker estimate rather than today's pump number.

The table below scales the EPA's number to three common driving patterns. The combined MPG and the reference fuel price stay constant, only the annual mileage changes. To get a current-prices estimate, take your local gas price and multiply by 882.4 gallons (the car's annual consumption at the rated MPG).

Year-over-year MPG for the Buick Terraza AWD

The EPA has rated the Buick Terraza AWD across 2 model years, from 2005 Buick Terraza AWD through 2006 Buick Terraza AWD. The numbers below are the best combined MPG figure the EPA published for each year, which lets you see when the car was at its most efficient and how recent generations stack up.

Combined MPG has stayed in roughly the same range across the run, hovering close to 17 MPG.

Compare against other Minivan - 4WD for 2006

If you are cross-shopping the 2006 Buick Terraza AWD, the most useful comparison is against the other cars in the Minivan - 4WD class for the same model year. The list below shows the highest-MPG peers, ranked from most to least efficient. Click any of them to open its full page.

Specifications

The 2006 Buick Terraza AWD runs a 3.5-liter 6-cylinder engine paired with a automatic 4-spd, sending power through 4-wheel or all-wheel drive.

Engine, transmission, and drivetrain together drive most of the variation in fuel economy across trims. A larger engine moves the car with less effort but burns more fuel. A turbo lets a small engine punch above its weight, often without much MPG penalty. All-wheel drive adds traction and weight, and usually costs a couple of MPG compared with two-wheel drive of the same engine.

Vehicle class

Minivan - 4WD

Engine

3.5L 6-cylinder

Transmission

Automatic 4-spd

Drivetrain

4-Wheel or All-Wheel Drive

Fuel type

Regular

Annual petroleum use

17.5 barrels per year

Common questions about the 2006 Buick Terraza AWD

Quick answers to the questions people most often search for when looking up the 2006 Buick Terraza AWD.

• Is the 2006 Buick Terraza AWD fuel efficient?

  It is in line with the rest of the class. The 2006 Buick Terraza AWD returns 17 combined MPG, and the average car in the Minivan - 4WD class for the same model year sits at 17 MPG.
• What MPG does the 2006 Buick Terraza AWD get?

  The EPA rates the 2006 Buick Terraza AWD at 17 combined MPG, 15 MPG in city driving, and 21 MPG on the highway. Real-world numbers depend on your driving style, the weather, and how loaded the car is.
• How much does it cost to fuel a 2006 Buick Terraza AWD per year?

  The EPA estimates an annual fuel cost of $3,500 for the 2006 Buick Terraza AWD. That figure assumes 15,000 miles of driving per year, a 55% city and 45% highway split, and the EPA's published average fuel price for the rated fuel grade.
• What fuel does the 2006 Buick Terraza AWD use?

  The EPA lists the 2006 Buick Terraza AWD as running on regular gasoline. Using a different grade than the manufacturer specifies can affect fuel economy and engine longevity.
• How much CO₂ does the 2006 Buick Terraza AWD emit?

  Tailpipe CO₂ emissions are 523 g/mi. Multiplied across a typical year of driving (15,000 miles) that works out to about 7,841 kilograms of CO₂.
• What is the difference between the city and highway MPG of the 2006 Buick Terraza AWD?

  City driving returns 15 MPG and highway driving returns 21 MPG, a gap of 6 MPG. A spread that wide is typical of cars with conventional automatic or manual transmissions, where stop-start city traffic eats more fuel than a steady highway cruise.
• What engine is in the 2006 Buick Terraza AWD?

  The 2006 Buick Terraza AWD has a 3.5-liter 6-cylinder engine.
• What transmission and drivetrain does the 2006 Buick Terraza AWD have?

  The 2006 Buick Terraza AWD comes with a automatic 4-spd transmission and 4-wheel or all-wheel drive. All-wheel-drive variants typically read 1 to 3 MPG lower than the front-wheel-drive equivalent of the same engine, since the extra hardware adds weight and parasitic loss.
• Is the 2006 Buick Terraza AWD the most efficient car in its class?

  Yes. Among cars in the Minivan - 4WD class for the 2006 model year, the Buick Terraza AWD returns the highest combined MPG at 17 MPG. No other car in the same class beats that figure.
• How much more does the 2006 Buick Terraza AWD cost in fuel compared to an average car?

  The EPA estimates that over five years, the 2006 Buick Terraza AWD will cost about $6,750 more in fuel than an average new vehicle of the same model year. The difference accumulates because the car uses more fuel per mile, not because of any one-off charge at the dealership.

Source: U.S. EPA fuel economy dataset. Annual fuel cost figures assume 15,000 miles of driving per year and a 55% city, 45% highway split. Real-world mileage varies with driving conditions, vehicle maintenance, fuel quality, and driver behaviour.