BMW 4 Series Convertible Review

Its diesel powertrain means it will likely be a niche model €" not that there'€™s anything notably wrong with it. It'€™s refined, smooth revving and even sounds quite nice when you give it a boot-full.
There is some minor turbo lag from a standstill and that typical diesel clatter, albeit well restrained, at low idle and low speeds. Once its up and running it proves a tractable engine.

In the middle is the 428i, which in Coupe guise is the pick of the bunch. With a brilliant turbocharged four-cylinder engine under the bonnet producing 180kW at 5000-6500rpm and 350Nm from 1250-4800rpm, it’s extremely useable and mighty peppy. Performance is claimed at 6.4sec for the 0-100km/h dash, while fuel use is rated at 6.7L/100km. We saw 8.0L/100km for our test.

It revs cleanly and smoothly, gathering pace quickly and delivering power with silky response. It proved itself quite amenable at all speeds, sauntering nicely in urban running while also sitting comfortably at highway speeds, and also offering plenty of reward to the right foot if the opportunity arose.

The range-topping 435i'€™s 3.0-litre six-cylinder turbocharged mill is the go-fast option. With 225kW at 5800-6400rpm and 400Nm from 1200-5000rpm it'€™s a lively thing, offering rapid acceleration: its claimed 0-100km/h time is 5.5sec, while fuel use is 7.7L/100km (we saw 9.1L/100km on our test).
This engine is strong in every application €" it offers excellent low-rev pulling power and a charming exhaust note as you lift off the accelerator €" though it could be a little louder. It also proves a good tool for tootling around the suburbs, too.

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