Changing from soft-top to hard-top just a few years ago seemed to be a good idea, but in 2020 BMW did the exact opposite by switching from hard-top to soft-top for the 4-Series convertible.
BMW had a long history with open-top vehicles, even before WWII. The German car-maker always mastered the mix between the driving pleasure in a sports car and the open-top experience with minimal or no compromise in performances.

The first element that stood apart on the car’s image was the grille. It was massive and extended down into the apron, eliminating the other grille from the bumper. The side-pods hosted the fog lights and fake air-intakes for the brake discs. The LED headlights were fitted as standard while the laser lights were on the options list. The 4-Series convertible featured a clean look, with curved surfaces, unaltered by sculptured doors from the sides. The designers installed a pair of fake vents behind the rear wheels and a couple of exhaust tips in the back.

The interior was suitable for four adults due to the big, 2.85m (112.2”) wheelbase. Since the soft-top took less room than the hard-top, the rear bench could have been moved almost over the rear axle. Due to the new system, the trunk offered 80 liters (2.82 cu-ft) more room than its predecessor. But that was not all. The soft-top could have been opened or closed at speeds of up to 50 kph (31 mph) in 18 seconds.

The 4-Series convertible was fitted with a choice of four engines ranged from 184 hp up to 374 hp with either rear- or all-wheel-drive. All versions were fitted with 8-speed automatic transmission. To comply better into the Euro 6d requirements, a mild-hybrid diesel version was added to the range.

The German producer released the 4 series in 2013.
The 4 series were the rebadged versions of the 3 series, the different nameplate being used to differ the sedan from the coupe and the convertible models. Despite the different nameplates, the 3 series and the 4 series shared the same platform, the same drivetrain and even the same interior features. The facelift version was released in 2017 and started selling with 2018.
The exterior changes are extremely minor, however, the new lightning system is worth mentioning. The 4 series used LED light for the headlights, taillights and even fog lamps.The BMW 4 series was available in 4 trim levels such as Advantage, Sport Line, Luxury Line and M Sport and also got 2 exclusive colors, Snapper Rocks Blue and Sunset Orange.The interior did not suffer significant changes and was available with 3 new leather upholsteries: Midnight Blue Dakota, Cognac Dakota and White Dakota. The interior trims were also refreshed and became available in Carbon Aluminum, Light Fineline and Pearl Chrome.
The 4 series had a wide variety of powertrains available, with both gasoline and diesel engines. The gasoline engines were a 2.0-liter 4-cylinder available for the 420i (181 hp) and the 430i (249 hp). The 440i featured a 3.0-liter engine with 322 hp. There were 3 diesel options available, the 420d,430d and a 435d, that were not available for the U.S.

Like its coupe brother, the 2013 BMW 4 Series convertible kicked in to replace the company’s outgoing 3 Series cabriolet.
The new two-door droptop is longer and wider that the vehicle it replaces, and comes with improved performance and interior space. The 4 Series Convertible is available in four trims - Sport, Modern, Luxury and M Sport - and three engine choices. The 428i base model gets the turbocharged 2.0-liter four-potter, the 435i sports the familiar 3.0-liter six-cylinder, while the diesel version will receive motivation from a turbocharged 2.0-liter, which provides better fuel-efficiency when compared to the gasoline versions.