Renault's Mégane II range has hit the one million production mark after only 20 months on sale.

Launched at the end of 2002, it had exceeded its sales targets in 2003, becoming what its maker claims is the biggest selling car in Western Europe.

The Mégane I took 24 months to reach the million mark and almost 4.7 million were sold over seven years.

Renault said the Mégane, including the Scénic minivan derivative, has become the top-selling model in Western Europe, with 4.2% market share, and kept its leadership into the first four months of 2004, with a share of 4.7%.

The carmaker said that a significant contributing factor has been the roll-out of seven different body versions in only 18 months: the three and five-door hatchbacks launched at the end of 2002 were soon followed by a five-seat minivan, sedan, wagon, and coupé-cabriolet in 2003, then the longer, seven-seat Scenic at the beginning of this year.

A zippy Mégane Renault Sport three-door hatchback is the latest version to arrive and completes the range.

Based on a single platform - the Renault-Nissan Alliance's C platform - the various Mégane models are manufactured in three plants around the world: Palencia (Spain) for the hatchbacks and sedan, Douai (France) for the Scénic, Grand Scénic, sports hatchback and coupé-cabriolet, plus Bursa (Turkey), for the wagon.

Renault has recently added a 165hp two-litre turbocharged petrol engine to the range; in the new Mégane Renault Sport model it delivers 225hp and 300 Nm of torque.

Two Meganes are among five Renaults to have been awarded the top five-star rating in the Euro-NCAP crash tests.

The current Megane range also introduced heralded Renault's new "extended" model line structure which permits numerous possibilities for personalising vehicles with a combination of interior trim levels, equipment levels and powertrains. This is now spreading to the smaller Clio hatchback (also a sedan in some export markets) and new Modus 'mini-minivan'.