What is it?
The BMW Z4 sDrive18i convertible is the entry-level model in BMW’s facelifted Z4 range.
It uses a lower-output version of the 2.0-litre turbocharged petrol engine found in the sDrive20i and sDrive28i, resulting in a less expensive list price of £27,615.
Opting for the sDrive18i saves approximately £2100 compared with the previous base model, the sDrive20i, but it also dispenses with some of the kit. Dual-zone climate control and rain-sensing wipers are, for example, optional instead of standard.
As well as the new engine option, the facelifted Z4 benefits from small cosmetic tweaks to keep it fresh among rivals such as the Mercedes-Benz SLK. These include white LED ‘corona’ rings around the headlamps and a smattering of chrome trim.
What's it like?
Under the BMW’s bonnet, you’ll find a 154bhp 2.0-litre ‘TwinPower Turbo’ engine, which features a single twin-scroll turbo and variable valve lift and cam timing control. The combination of these technologies allows it to generate 177lb ft between 1250rpm and 4400rpm.
Although its modest power output translates to a tame but acceptable 0-62mph time of 7.9sec, its wide spread of torque means that the BMW feels flexible and punchy, even in higher gears.
It sounds moderately potent, too, with frequent flutters from its wastegate, audible turbo spooling and a satisfying burble on overrun.
There are no improvements in efficiency, though. The sDrive18i’s combined 41.5mpg and 159g/km of CO2 are the same as the 181bhp 20i’s and 241bhp 28i’s.
Drive is transmitted to the rear by a six-speed manual gearbox. It offers a decent selection of ratios and a short and swift shift action, allowing you to make good use of the power on offer, but its action is baulky and notchy.
The car we drove had several options, most notably 18-inch alloy wheels, adaptive M Sport suspension, sports seats and a Comfort pack that includes a rear wind deflector.
Join the debate
reckless fox
What's the point
Can't quite see the point of this. You get a lower power engine than the 20i but no better economy or Co2. If you add back the options the saving is only about 5% of the 20i's price for a markedly inferior performing car.
You'd only go for this is the last £1500 was critical but, in that case, why not go for a GT86 or even a MX5
A34
The point is... It's a cruiser
It's the *successful* hairdresser's car, a step up from the MX5 (which as *we* all know is also a real sports car). Or something for the Cheshire WAG. Or for the mistress...
Orangewheels
reckless fox wrote: Can't
I'd guess it's as much about being able to advertise a cheaper starting price than its rivals, plus there are always those looking to squeeze their small budget as much as possible to get into a car they cant really afford, and it might stretch to this but not a more expensive version.
There might also be some people thinking they can buy this car and spend a few hundred quid chipping it to get the higher horsepower of the 20i or 28i for less money.
Peter Cavellini
Options!!!!
Well, most people on average add about 20% to there bill in options,so over £30K is what we're likely to pay.Sooner get something a year or 18mths old,with more kit,more warranty,and maybe more performance.
xxxx
not on all cars
surely you can't be saying most people spend on average £3400'ish on extras for their Focus, Leon's etc
Peter Cavellini
I did say most.....?
xxxx@
Unless your buying a FocusRS,or a top of range of a particular make,yes, you wouldn't be adding this amount,but, once your over say £27-28K...?,then, yes, most add a few extra's, plus, the way options are in packs,sometimes you have to take a couple of packs to get the option you really wanted,dealers have these packages worked out so in most cases you have too take one you didn't want,so, 20% isn't an unrealistic figure.
Frightmare Bob
It looks dumpy, so it falls
It looks dumpy, so it falls down on looks and it is heavier and slower than a 320D.
DBtechnician
Nice Interior
I must admit when I saw BMW Z4 as the title I didn't think I would like the look of it, plus I'm not a hairdresser.
Fox has a good point why not spend a bit less and buy the GT-86, now that does drive well.
Choices choices theres also second hand options for 27-30K theirs loads to chose from, but you know what that interior looks much more expensive, infact this little car looks much more expensive than it is and I expect that will be enough to persuade some to go for one.
spqr
What's the point?
This car shows up the problem with the new BMW N20 petrol engine strategy - they are all the same. Not only is the economy and CO2 of this model the same as the 20i it is the same as the 28i as well because they are the same engine. Just buy the 18i and then get it chipped you'll soon be driving a "28i". BMW have abandoned engineering proper engines for enthusiasts and started producing cookie-cutter power units like Audi.
As for the handling as Autocar has identified the problem for the Z4 before in the full road test - in order to accommodate the folding hard top the rear suspension has to be relatively soft compared to the front (presumably to avoid damage to the folded roof and to allow the extra weight to be placed over the rear axle). This means that the rear (driving) wheels feel light and disconnected when cornering at anything other than cruising speeds. Not good for a sports car. Having owned an E89 Z4 the other issue to watch for with the folging hard top is rattling. Because BMW have engineered the car cheaply the roof sits on a plastic deck plate when it is up as this vibrates quite a lot the two halves of the roof rattle against each other and against the rear deck, windows and header rail. Not good or relaxing for a cruiser.
It seems that the introduction of the E89 Z4 could have marked the point at which BMW just gave up. Apart from the M cars.
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