Road Test

Road Test: 2010 BMW 335i Convertible

August 11, 2010

BMW 335i 2010_01

The BMW 3-series Convertible with a roof up looks almost as good as coupe and even better with a roof down. The three sections of the electrically retractable hardtop come to rest when open in compact arrangement above one another at the rear. This gives Convertible that horizontal waistline so characteristic of an open-air BMW. The dynamically stretched silhouette of the new 3-series Convertible is further emphasised by innovations in design at the front, side and rear. These modifications to the car’s exterior can be seen on the engine compartment lid, the front air dam, the BMW kidney grille, the side-sills and the rear air dam. Yet a further feature on both the new 3-series Coupe and Convertible is that the front end, now sticking out further than before, helps to optimise pedestrian safety.

With its wider BMW kidney grille and three-dimensional lines, the front view of the new Convertible boasts even greater and more powerful presence. The frame around the kidney grille now comes as a chrome band precisely twisted within itself. The second new highlight at the front is the horizontally designed air intake extending from one side of the car to the other in order to significantly emphasise the sheer width of each model. At the side the air intake is split horizontally by silver-coloured trim bars extending from the round foglamps positioned far to the outside all the way to the BMW kidney grille.

BMW 3-series Convertible comes as standard with bi-xenon headlights. Dual round headlights combine modified contour lines with innovative light technology. At the top, the headlights merge into a trim bar cutting off the light beam to create that concentrated look so typical of a genuine BMW. The light sources are formed by two cylindrical light beams and the headlight units come as an option with Adaptive Lights following the course of the road ahead as a function of the steering. The daytime light function so characteristic of a BMW is provided by light rings featured as standard in the headlights.

The optional LED Package comes with light rings formed by light-emitting diodes operating as required in two stages: dimmed to approximately 10 per cent of their full power, they serve as positioning lights, operating at full power, they provide a daytime light function. The rear light clusters in their two-piece L-shape characteristic of both models are further accentuated by a new colour scheme. Featuring two rows of lights coming on at the same time, they create that night design so typical of a BMW, red cover glass all round now giving the lights an even more harmonious and well-balanced look.

335i is equipped with a newly developed straight-six power unit for the first time combining BMW TwinPower Turbo Technology, High Precision Injection, and Valvetronic fully variable valve management. From the displacement of 3.0 litres, the engine delivers maximum output of 306 hp and peak torque of 400 Nm. The peak torque is available on a very wide rev range from 1200 to 5000 rpm, meaning that it doesn’t really matter which gear you’re on, the engine always keeps you going. The turbocharger system applying the TwinScroll principle with separate ducts for each set of three cylinders both in the exhaust manifold and in the turbocharger itself, and Valvetronic valve management now enhanced to an even higher standard, ensure a fascinating, direct response to the gas pedal at all times.

Combining these features with High Precision Injection, the new power unit offers the muscle and performance of a naturally aspirated eight-cylinder with exceptionally low fuel consumption and exhaust emissions. Acceleration from a standstill to 100 km/h takes just 5.8 seconds and the top speed is limited electronically to 250 km/h. Eventhough you really love the performance this engine offers, it is also good to know that the average fuel consumption of the 335i Convertible is only 8,8 litres per 100 km (32,1 mpg). So the 335i can easily be taken on a longer journeys also.

BMW 3-series Convertible comes as standard with a six-speed manual gearbox. The BMW 335i feature a newly developed transmission with dry sump lubrication which, through its optimised operation, enhances the efficiency of these models to an even higher level than before. 335i is also available with seven-speed Sports Automatic featuring double-clutch operation. Sports automatic transmission shifts gears without the slightest interruption of traction and engine power, thus offering supreme and highly dynamic acceleration at all times. It would accelerate even faster than the manual version, while maintaining the same low level of fuel consumption. Eventhough the automatic transmission provides even better performance, I would still prefer this manual gearbox for a BMW 3-series. Working with manual just gives you so much more fun.

BMW 335i 2010_05



  • petrol
  • 6-cylinder
  • 2979cc
  • twinturbo


  • 225 kW ( 306 hp) / 5800rpm


  • 400 Nm (295 lb-ft) / 1200-5000rpm


  • 6-speed manual
  • RWD

0-100km/h / 0-62mph

  • 5.8 seconds

Top speed

  • 250 km/h
  • 155 mph

Fuel consumption

  • 8.8 l/100km
  • 32.1 mpg

CO2 emissions

  • 205 g/km

BMW 335i 2010_02


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