Mazda's compact, sporty, front-wheel-drive MAZDA3 was available in both sedan and hatchback (wagon) versions for 2006. Entry-level models received a small bump in power, while a new 5-speed automatic was available as an option on higher-end models. In addition, new Grand Touring trim packages were added to the MAZDA3 lineup.

Standard power for the MAZDA3 i trim packages was a 2.0-liter inline 4-cylinder engine, which received variable valve timing for 2006, bumping horsepower to 150 (from 178 hp the previous year).

The higher-end s trim packages received a 160-horsepower, 2.3-liter 4-cylinder engine. A 5-speed manual was standard across the line, while a 4-speed automatic was optional for the i trim packages and a new 5-speed automatic was an option for s versions.

The list of standard features for the MAZDA3 was extensive and included air conditioning, dual airbags, a tilt/telescopic steering wheel, CD player, 4-wheel independent suspension and steering-wheel mounted audio controls. The s trim packages added power windows, power door locks and a leather-trimmed steering wheel, while the Grand Touring packages added leather seats and a trip computer, among other features.

Drivers like the MAZDA3's handling, comfort, styling and roominess (for a small car), as well as its long list of features. The air conditioning was considered one of the car's weak spots.