The Numbers

3.0L petrol 6-cyl, 250kW, 450Nm, 8sp auto, 0-100km/h in 5.0secs (est.), max 250km/h, 7.4L/100km, 1,470kg

The Topgear Verdict

An amazing machine that pushes the 435i's 'M' personality through the roof.

BMW 435i M Sport

So, what is it?

BMW Australia has gone to town on this 435i Coupe, with an M Sport package to end them all, designed to showcase the dynamic and visual impact of a full-on M option upgrade.

What's new about it?

Already a stunning machine, the powerhouse two-door features a healthy dose of Motorsport goodness in its standard spec, including 19-inch M light alloy rims, ambience lighting, a BMW Individual high-gloss shadow line and ‘Anthracite’ coloured roofliner, sport seats, high-finish chrome tailpipe, an M aero package, M door sill finishers, and an M leather steering wheel. Phew!

This particular car is optioned with a glass sunroof ($2,920), head-up display ($1,700), and a digital radio tuner ($500), bringing the recommended list price up from $108,530 to $113,650. Then the M onslaught takes over…

First there’s the steering wheel trimmed in Alcantara and carbon fibre, complete with an F1-style, LED race display in the upper part of the rim ($1,852). Then comes the M Performance interior, with Alcantara and open-pore carbon fibre highlights ($1,250), followed by stainless steel pedal covers; a snip at $214, carbon trimmed gear knob ($230), and a pair of M Performance floor mats. They certainly don’t make the car go any faster, but will set you back $211 none the less. And that’s the interior taken care of, with the running M options total at $3,757.

Outside, the biggest ticket item of all is a set of M Performance 20-inch forged, milled and polished light alloy wheels, shod with high-performance rubber (225/35 front, 255/30 rear), weighing in at $6,280.

Then the aero kit is dialled up with the addition of a carbon front splitter ($1,842), and carbon rear spoiler ($842). That black matted material is also applied to the rear view mirror caps ($682), the side sports are wrapped in a black ‘M Performance’ graphic ($263), the kidney grille is finished in high-gloss black ($285), and bold ‘tricolour’ M Motorsport stripes run down the flanks ($278).

That's all fine. What's it like to drive fast?

Thanks to the final box ticked on the M options list, this car goes like a freight train at full throttle. The ‘M Performance Power Kit’ (code for an ECU tune and modified inlet manifold) lifts the 435i’s power from 225 to 250kW, and torque from 400 to 450Nm. BMW claims there’s no fuel economy penalty. Expect the ‘standard’ car’s claimed 0-100km/h time of 5.1secs to drop into the high four second bracket.

How much would I have to pay for one? And is it worth the coin?

Add the interior remodelling ($3,757), to the aero and aesthetic body mods ($10,472) and engine upgrade ($2,500), and the all-in cost for the options fitted comes to $16,729, bringing the total price of this car to $130,379. Pretty handy value if you’re an M-o-phile, and an M4, at $166,430, is just out of reach. Watch the video and make your own call.

Driven: August 21, 2014