BMW M4 vs Lotus Exige

What's the difference?

Brutal, bruising and utterly brilliant, the M4 CS will be an acquired taste due to its no-compromise approach, but those willing to take the leap will find a performance car like few others at their disposal.

To say the Lotus Exige 350 Sport exists at the very pointy end of motoring is a sharp understatement. It is, in essence, a track car that you’re somehow allowed to drive on the road, which means it's hugely compromised in various ways as a vehicle for day-to-day use, yet it's not really fair to criticise it for those failings, because commuting was never its intended purpose.

While it would obviously shine in its natural environment of a race circuit, the fact is you could also enjoy it enormously between track days if you pointed it at a suitably smooth and winding bit of country blacktop.

The performance, handling, steering and stopping are all fantastic, in the right conditions, and you can see how someone might justify it to themselves as a far cheaper version of a ($327,100) Porsche 911 GT3. The difference being that a Porsche doesn't make you fold yourself up like a pocket knife every time you get in.

The Lotus, then, is a car for the extreme enthusiast, only. And possibly for nudists, too.

The M4 CS is familiar in all the right ways, but definitely looks significantly jacked up compared to its lesser siblings.

Part of that is the extensive use of carbon everywhere, from its bonnet panels to its roof, front lip, side skirting and boot spoiler. But also because of its super-muscular angles and creases, including the huge dome in its bonnet.

Also exclusive to this M4 CS is the light treatment, with the front LEDs lighting up with yellow highlights the brand says are supposed to be reminiscent of GT racing cars.

At the back, the rear lights are flush with fibre optic lighting, lending a flowing and unique light signature that looks epic at night.

Inside, it's a sea of carbon, with the lightweight racing seats, the dash inserts and the centre console all lined in it. It is a perfectly finished space, though, and one that's also flecked with red, including a 12 o'clock band on the thick-rimmed steering wheel, the seat backs, the contrast stitching and the paddle shifts.

Be warned, though, it takes some acrobatics to climb into or out of the CS. The seat bottoms have these super high edges that double as grab handles, but require some awkward contortions to navigate.

In short, it looks angry, this M4 CS, inside and out.

The Lotus philosophy is summed by this slightly absurd mission statement: "Simplify, then add lightness". In the words of the great Barnaby Joyce "you don’t have to be Sigmund Freud" to work out that lightness is not something you can 'add', but you get the idea.

Everything about a Lotus is focused on the power-to-weight ratio, and this 350 Sport version takes the Exige to the ultimate degree, weighing in a full 51kg lighter than the S version, at just 1125kg, and with its hefty 3.5-litre supercharged V6 it is capable of lapping the company’s Hethel, UK test circuit a full 2.5 seconds faster.

Lap times, rather than road manners, are what this car is all about, and as such there are no creature comforts of any kind.

The Exige is an eye-catching beast, though, looking a bit like Darth Vader's helmet strapped to a skateboard. Everything about it is a statement of intent, and while the interior is as bare as Barnaby's brain, the gear lever, with its exposed workings and shiny silver knob, is a thing of strange beauty.

It all boils down to how you classify practicality in a car like this. I mean, the basic stuff is all there – it's got two doors, four seats and a boot capacity of 440 litres.

It measures 4801mm in length, 1918mm in width and 1399mm in height, and room for front seat riders is good, but less so for anyone you squeeze into the back. There are even ISOFIX points for a child seat.

But if you consider practicality the practical pursuit of performance, then the M4 CS has plenty of perks.

Both the words 'practical' and 'space' have no place in a road test of this Lotus, so shall we just move on?

Oh, all right. There is no shoulder room to speak of and to change gears you have to fondle your passenger's leg. You're also in danger of breathing into each other’s mouths accidentally, you’re sitting that close.

Speaking of impractical, the door apertures are so small, and the whole car so low, that getting in or out is about as much fun as attempting to hide in a child's suitcase.

Cupholders? Forget it, nor is there anywhere to put your phone. There are two tiny oddment storage holes just near each well-hidden door handle, and a kind of slidey, slick shelf where a glove box might be, on which it’s not safe to leave anything.

Put things on the floor and they will slide under the super low seats and never be seen again.

The Lotus people pointed out a parcel shelf behind the seats, but I think they imagined it, and there is a tiny boot at the rear, behind the engine, which is smaller than some actual boots.

The question of 'value' is a tricky one when you’re looking at a $138,782.85 car that’s about as useful in day-to-day life as a matchbox-sized handbag. But you have to consider what people buy a Lotus for, and the answer has absolutely nothing to do with practicality.

A car like this Exige 350 Sport is purely purchased as a toy, a track-day special that you can, in theory, drive to the circuit via public roads. Franky, if I was rich enough to have one I’d still transport it there on the back of a truck.

Relatively speaking, you could have a far more practical and infinitely more comfortable Porsche Cayman for $30K less, but the Lotus is $30K cheaper than the similarly track-focused and brutal ($169,990) KTM X-Bow.

It is the opposite of comfortable.

In terms of features, you get four wheels, an engine, a steering wheel, some seats, and that’s about it. You can buy a circa 1993 removable-face two-speaker stereo, which you can't really hear over the engine and road noise, for $1199. Oh, and they do throw in air conditioning, which is also noisy.

Our slick-looking metallic black paint was also $1999, the 'full carpets' another $1099 (expensive floor mats, basically), the Alcantara trim pack $4499, cruise control (really?) $299 and the hilarious optional 'Sound Insulation' $1499 (I think they actually forgot to fit it). All up, our press car’s price climbed to $157,846, which, I have to say, is no one’s idea of good value.

On the plus side, the local Lotus people - Simply Sports Cars - do offer features a buyer would love, like regular Lotus Only Track Days, a chance to take part in the Phillip Island 6 Hour and the Targa High Country event, and various other racy experiences.

BMW has found yet more grunt lurking in its trusty 3.0-litre 'M TwinPower' six-cylinder petrol engine, with the M4 CS now pumping out 405kW and 650Nm.

That's a decent jump from the 390kW and 620Nm served up by the M4 Competition, and a giant leap from the outputs of the 'base' M4 – 353kW and 550Nm.

Predictably, then, the CS is the fastest of the lot, knocking off the run from 0-100km/h in 3.4 seconds, compared to 3.5 and 4.2 in the Competition and M4, respectively. The top speed is also dialled up to 302km/h.

All that power is channeled through an eight-speed automatic and sent to all four wheels on demand, with the help of an 'Active M Differential'.

In the past, Lotus engineers were satisfied with the power they got from tiny four-cylinder Toyota engines, but this Exige 350 Sport is a Very Serious Car and thus has a relatively whopping 3.5-litre, supercharged V6 shoehorned into its backside, which makes 258kW and 400Nm, and that's enough to fire this tiny machine from 0-100km/h in just 3.9 seconds, although it feels, and sounds, a lot faster.

The six-speed gearbox feels like it's been stolen from an old racing car and is an absolute joy to snick shift at speed.

The M4 CS is fitted with a 59-litre fuel tank, which – given the BMW's official fuel claim of 10.2 litres per hundred kilometres – should deliver a driving range on a full tank of 541 kilometres.

But... BMW also says the regular M4 – you know, the one that makes 52 fewer kilowatts and 55Nm less torque – uses 10.1L/100km, so do with that information what you will.

Lotus claims a combined fuel economy figure of 10.1L/100km. We don't believe that would be easy to achieve, because the temptation to rev the hell out of it and hear it roar would be too great, and too constant.

The hardest and angriest M4 of all time is, perhaps unsurprisingly, hard and angry. This is a race track specialist, but because I don't happen to own one of those, my first experience with the barking (and barking mad) M4 CS was navigating my way back from BMW's inner-city dealership.

Like it or lump it, you're going to read some Porsche comparisons here, because you're talking not too far off base 911 Carrera money, and suddenly I find the two Germans doing battle for a spot in my dream garage.

First things first, the BMW won't be much chop for daily driving for most people. Happily, I have a sickness for uncomfortable sports cars. It tells me that no compromises have been made in the pursuit of punishing performance.

A good thing, too, because the BMW, at city speeds, can be punishing. Everything feels heavy, the seats aren't overly comfortable – especially the hard bits that tend to dig in when cornering – and it stiff-arms its way over road imperfections, that exhaust booming and barking as it does.

Again, I loved it, and you probably will, too. But it's still not the kind of car I'd relish sitting in the morning peak hour rush in.

But escape the confines of the city and the BMW M4 CS suddenly makes a whole heap of sense. The acceleration is genuinely brutal, and wonderfully theatrical, with that quad-tipped titanium exhaust barking and snarling as you rocket towards 100km/h.

The steering is brilliant, with feedback fed to your wrists via that thick-rimmed wheel, and the entire experience feels sharp, super engaging and edgy.

You can push the M4 hard and fast, and I'm certain my limited talents would run out far before the BMW's would, but there's this thrilling sense of peril sparked by the aggression of the experience, that I love.

It's like the magic of a roller-coaster, I guess. Even if you know nothing is going to happen, you never really know, right? And in that lies the magic.

But back to original question, this or a Porsche 911? There's no doubt a Carrera is a better all-rounder, in terms of comfy commuting and race track fun, but this angry M4 is all shouty theatrics, all of the time.

I bloody love it.

It's rare to find a car that is such an improbable mix of furious fun and infuriating annoyance. The Lotus is rattly, noisy, hugely firm to the point of punishing, with seats that offer encouragement but not support.

It is the opposite of comfortable and so hard to see out of that driving it around town, in any sort of traffic, feels borderline dangerous. There’s also the distinct sensation that you’re so low and so little that all those people in their SUVs won't see you.

Throw in the fact that it's so painfully, stupidly difficult to get in and out of and it's definitely not the sort of car you take if you're heading to the shops. I got so sick of its hard-edged annoyances at one stage that I became too grumpy to even take people for joy rides in it. I just couldn’t be bothered with the hassle, but then an inner-city suburb with high kerbs and even higher speed humps is not the Exige's natural environment.

The gearbox is a thrill a minute, as is the engine.

Making it even more of a challenge around town, at low speeds or in parking situations is the steering, which isn't so much heavy as wilfully obtuse. Doing a three-point turn is the equivalent of 20 minutes of bench pressing your own body weight. At least.

Out on a winding bit of country road, however, the steering becomes one of the best things about the car, because its pure, unassisted weighting feels so alive in your hands. There’s a sense of actually wrestling, or finessing it around corners that makes you feel a bit Ayrton Senna.

Indeed, the whole car comes alive, and starts to make some kind of sense, once you're on a smooth, perfect piece of tarmac. It is fast, noisy, thrilling, utterly and overtly involving, stiff of chassis and firm of ride, with brakes capable of pulling you up with indecent haste. It’s also, thanks to its low centre of gravity and mid-engined layout, beautifully balanced.

The gearbox is a thrill a minute, as is the engine, particularly once you explore the upper rev ranges, at which point the scenery really does become a scary blur out the ridiculously small windscreen.

Sure, you can't see anything behind you other than the engine, but what a lovely sight that is, and nothing is going to catch you anyway.

It does feel edgy, of course, and sharp, and it’s not as easy or refined to drive as some cheaper sports cars; an MX-5 makes for a far more pleasant companion. But this is an extreme Exige, a machine built by and for genuine enthusiasts.

And, above all, for the sort of people who will take it to a race track, which is where it both looks and feels completely at home.

Unfortunately, on public roads, it would be annoying more often than it would be thrilling, but the truly hardcore Lotus aficionados would never admit such a thing.

Unsurprisingly, considering it will sell fewer than 100 cars in Australia, Lotus has not had the Exige ADR crash tested, so there's no star rating. You do get two airbags, passenger and driver, as well as ABS, 'Hydraulic Brake Assist', 'Lotus Dynamic Performance Management', driver-selectable ESP with three modes, cornering brake control and EBD.

The M4 CS is covered by BMW's five-year, unlimited-kilometre warranty, with condition-based servicing available in packs, which will cost you $3530 over five years/80,000km, or $2900 over four years/60,000km.

Your Lotus comes with a three-year unlimited kilometre warranty and three years of roadside assist. A service costs $295, plus parts.