This 4th generation of the long-running 3-Series remained BMW's best-selling car, and with good reason. Ignoring the 3-Series Compact that was based on an older platform, this iteration of the 3-Series came in sedan, coupe and convertible forms, as well as in wagon trim that never came to the GCC. These variations were enough to solidify this model as the arguably the top-selling entry-luxury car in the market. While lower models managed with cloth upholstery, steel wheels and basic power accessories, the higher trim levels enjoyed leather, premium CD stereo, navigation, alloy wheels, sunroof and other amenities. While all models were rear-wheel-drive, some markets may have gotten a few all-wheel-drive versions of the various models. Manual and automatic transmissions were standard, but some markets may also have automanual gearboxes on some higher models. The sedan debuted in 1999, followed by the coupe in 2000, with 2.0-litre, 2.2-litre, 2.5-litre and 2.8-litre engines, along with 318i, 320i, 323i and 328i designations respectively, and 2-door models getting "Ci" badging instead of "i" at the end. The year 2001 brought about the hot 3.2-litre M3 version, available in 2-door form only, while all other models got new engines and names, such as upgraded 2.5-litre 325i and new 3.0-litre 330i alongside the existing 318i and 320i. A minor front-end facelift came in 2002 for all models except the M3. A lightweight M3 CSL with an upgraded engine was briefly available unofficially. While the sedan was replaced by an all-new model by 2006, the coupe and convertible continued well into 2006 before their new versions came out.