The four door Smart was produced at the NedCar factory in the Netherlands in conjunction with Mitsubishi Motors, the same factory that produced the Volvo 340 in 1970s and 1980s.

The Smart Forfour was developed with Mitsubishi and built in Mitsubishi's Ned Car plant in the Netherlands.

It was co-developed with Daimler Chrysler, and shared 60% of its parts with the Mitsubishi Colt.

Significantly lower and shorter than its Mitsubishi Colt sister car, the design of the new For-Four followed the themes set by previous smart models such as the city coupe and roadster.

Rather than pursuing a simple platform strategy, the approach used was based on the intelligent use of shared components.

To save production costs, the Smart ForFour shared the chassis, suspensions, and a new generation of the MIVEC engine. The available cdi diesel engine was a three-cylinder Mercedes-Benz engine derived from the four-cylinder model of the Mercedes-Benz A-Class.

It was reported in 2004 that the Smart Forfour was designed to pass all U.S. safety and emissions regulations.

The Smart ForFour interior offered infinite configurations for drivers, passengers and cargo. 

A Brabus-prepared sports version was available in 2005. It is powered by a turbocharged Mitsubishi engine, developing 177 hp. Its price in Germany was $31,954. These exciting new cars give customers the performance potential of a sports car.

These cars were aimed squarely at the future and engineered by the greatest intellectuals in the automotive world.

The Smart ForFour was expressive and functional. The styling, driving capability, high fuel mileage and low emissions make these cars stand out from the crowd.

These cars are aimed squarely at the future and engineered by the greatest intellectuals in the automotive world.

Customers could choose two design and equipment lines (Pulse and Passion).

The "Pulse " line offered a full range of high-quality features as standard, whereas "Passion" caters to the highest comfort requirements.

The Smart For-Four interior offered infinite configurations. The styling, driving capability, high fuel mileage and low emissions made these cars stand out from the crowd.

The Smart ForFour was jointly based on the DaimlerChrysler electrics and electronics platform. The new Smart was the first vehicle from the joint DaimlerChrysler/Mitsubishi Z-car project, based on the new Japanese Colt (left) subcompact, which will also include the European Colt.

Also on the Smart ForFour the customer could choose between the roof in synthetic material, the roof "Panorama" in crystal and the sun-roof electrical worker in glass.

In 2005 Mitsubishi Motors Corp and DaimlerChrysler halted production .

The two automakers had been in talks on ending production of the compact car, after DaimlerChrysler decided to stop making the model as part of its restructuring efforts.