The LS is a rear-wheel-drive sedan designed to be a sporty competitor to the BMW 5-series. Handling is agile, and the ride is firm and well controlled, not like a traditional Lincoln. The 3.0-liter V6 is not all that quick. The 3.9-liter V8 is stronger and the automatic transmission is Ford's smoothest. Rear knee room is tight. 2001 brought available stability control. The front-wheel-drive Zephyr replaced the LS for 2006. It is a mid-sized sedan based on the Ford Fusion/Mercury Milan and shares a platform with the Mazda6. Handling is responsive and secure, but not sporty. The ride is firm, supple, and controlled. Stability control is not offered.