BMW Z4 (2003 – 2009) Review
BMW Z4 (2003 – 2009) At A Glance
The first generation of BMW Z4 showcased the firm’s ‘flame surfacing’ design style. Coming on the heels of Chris Bangle’s radical new direction for BMW’s styling, the Z4 was a complete and welcome break from the previous Z3.
However, the Z4 was styled by BMW’s Danish designer Anders Warming, so the car has its own unique appeal that helped it take on the Porsche Boxster directly where the Z3 had always trailed in the Porsche’s wake. Thanks to a spread of engines and dose of practicality, the Z4 also managed to challenge the Mercedes SLK and Audi TT to be a very competent all-round roadster.
Produced in BMW’s Spartanburg factory in South Carolina it was obvious the main market for the Z4 was in the USA. That hasn’t stopped it being a success in the UK, which has been a strong market for the BMW convertible.
A fabric soft-top aped the Z3’s design, but the Z4 features a glass rear screen for added comfort, noise suppression and security. It also makes it easier to defrost on chilly mornings to make the Z4 usable all-year round.
Sticking with a classic front engine, rear-wheel drive layout, the Z4 enjoys perfect 50:50 weight distribution. It shows in the handling balance of the Z4, which errs much more on the sporty side than its Audi and Mercedes rivals. There is also quick reacting steering to deliver a keen driving experience.
BMW fitted the Z4 with its smooth, sonorous six-cylinder engines from the start in 2.5- and 3.0-litre guises. Both offer strong performance and were joined by a 2.2-litre six-cylinder in 2003. This latter engine was superseded by a 2.0-litre four-cylinder motor in 2005 which, although slower than the 2.2, is smoother and more enjoyable to use.
BMW Z4 (2003 – 2009) handling and engines
- Engines range from 2.0i to M Roadster
- Readers report Real MPG to be between 21–45 mpg
Any sports car with a BMW badge on its nose has a lot of expectation to live up and the Z4 does not disappoint. Its classic front engine, rear drive layout combines with 50:50 weight distribution to deliver one of the best driving experiences you can have. Even up against the benchmark Porsche Boxster, the Z4 measures up.
It’s a different driving experience in the Z4 to the Boxster. Where the Porsche is all about precision and metering out its responses in carefully judged, delicate proportions, the BMW has more of an old fashioned Brit sportster feel to it. Steering that is quick to react to the driver’s inputs can make the car seem a little fidgety or flighty until you get used to it, but when you do the Z4 can be placed with astonishing accuracy and lets the driver use small inputs to great effect.
Another area where the Z4 feels more traditional than the Boxster is the way it demands a little more respect and care when driving out of tighter corners or roundabouts. There’s standard ESP in the form of BMW’s third generation Dynamic Stability Control to prevent this from ever becoming a problem, but the Z4 will still twitch the rear end under hard acceleration. For some this will be a huge part of the appeal of the Z4, while for others they will prefer the unflappable nature of the Porsche or Audi TT.
Be under no illusions the Z4 is unstable or does not handle with great panache: it is simply a car aimed more at the enthusiast driver than most of its rivals. This makes it a great choice for those who might be tempted by the occasional track day foray in a similar way to the Honda S2000.
Unlike the Honda, though, the BMW comes with engines that do not have the revved to stratospheric levels to give their best. At launch, BMW wisely avoided a repeat of their mistake with the Z3 and introduced the Z4 with the best engines from the start. These are the 2.5-litre and 3.0-litre six-cylinder motors with 192PS and 231PS respectively.
Both of these engines have a slick six-speed manual gearbox as standard and the Z4 3.0i sees off 0-62mph in 5.7 seconds. The 2.5i takes 6.8 seconds for the same sprint, but on the road both engines rev so freely they feel quite similar in pace.
A 2.2-litre six-cylinder arrived in 2003 with 170PS, but it has never enjoyed the same popularity as the larger engines. This is because the smaller ‘six’ needs to be worked quite hard to access its more limited performance, which defeats the purpose of this type of motor.
Much better, if a little slower than the 2.2, is the 2.0-litre four-cylinder engine that replaced the smallest six-cylinder unit in 2005. It may have a modest 150PS, but it’s only a mite slower from 0-62mph and feels much more fun to use as it revs keenly.
A Sport button in all versions crisps up the response from the accelerator pedal, as well as adding a little more weight to the steering feel. An SMG (sequential manual gearbox) automated manual transmission is an option in the Z4 but frankly is best avoided, so choose the standard auto if you don’t fancy a standard manual ’box.
A standalone model within the range is the 343PS Z4M Roadster that conjures up 0-62mph in 5.0 seconds. It’s an altogether more focused performance car that appeals to enthusiasts and has considerably higher running costs than the rest of the Z4 range.
Regardless of which engine you have under the long bonnet of the Z4, all of them handle very well. They are great fun on country lanes and even the lengthy bonnet doesn’t cause any problems when it comes to pointing the car through tighter bends or parking up.
A reasonably tight turning circle also helps here, while visibility with the hood is no better or worse than any of the BMW’s competitors’. The suspension is firm over bumpy roads, but not so much that you couldn’t take the Z4 on holiday. Sport models have larger wheels and sports suspension as standard, so they are firmer still and this means an SE is the better choice as a daily driver.
Engine | MPG | 0-62 | CO2 |
---|---|---|---|
2.0i | 38–38 mpg | 8.2 s | 176–181 g/km |
2.5 Si | 34 mpg | 6.5 s | 199 g/km |
2.5i | 34 mpg | 7.1 s | 197 g/km |
3.0 Si | 33 mpg | 5.7 s | 204 g/km |
M Roadster | 23 mpg | 5.0 s | 292 g/km |
Real MPG average for the BMW Z4 (2003 – 2009)
Real MPG was created following thousands of readers telling us that their cars could not match the official figures.
Real MPG gives real world data from drivers like you to show how much fuel a vehicle really uses.
Average performance
95%
Real MPG
21–45 mpg
MPGs submitted
248
BMW Z4 (2003 – 2009) interior
- Boot space is 200–260 litres
Dimensions | |
---|---|
Length | 4091–4113 mm |
Width | 1781 mm |
Height | 1299 mm |
Wheelbase | 2495–2497 mm |
All Z4s come with an electrically operated fabric roof that folds away in only 10 seconds. It does this quietly and stores away behind the standard built-in roll-over hoops to the rear of the seats. When folded, the hood does not have a cover for the hood. Instead, the upper section of the roof acts as its own tonneau cover.
With the roof up, you can fold up part of the hood’s storage compartment to free up more boot space. It does mean you have to fold this back down when you want to drop the hood and that means opening the boot, but it’s a small price to pay for the added convenience this feature offers.
With the roof up and the boot configured to give the maximum space, there’s 240 litres of luggage space, which is less than an Audi TT Roadster’s and also a Porsche Boxster’s, but the Porsche’s is split between two separate boot spaces.
With the roof up, refinement is on a par with any of the Z4’s open-top rivals with the exception of the Mercedes SLK that trounces the competition thanks to its folding hard top. Lower the roof and the cabin is no more or less susceptible to wind buffeting than the Porsche Boxster or Mercedes.
A small wind deflector can be fitted between the two roll hoops to lessen wind disturbance in the cabin at higher speeds. At motorway pace and with the roof down, the driver and passenger in the Z4 can conduct a conversation or listen to the radio without resorting to ear drum-splitting decibels to make themselves heard.
The passenger has plenty of legroom and both seats are supportive and ideal for long distance touring. As you’d expect of a BMW sports car, the driving position places the driver low and snug in the car, though all-round vision is good for this breed of car. The steering wheel is adjustable for reach and height, while manual seat adjustment controls can be upgraded to electric operation.
With the seat set for the driver, the gear lever falls naturally to hand and the foot pedals are ideally spaced for keen driving while still giving you somewhere to rest your left foot.
BMW has designed the Z4 dash with the minimal of fuss, so directly in front of the driver is the speedo and rev counter, with a small digital display in the space between these dials. The stereo controls are grouped on the upper slope of the centre console, while the ventilation controls are placed beneath on the lower edge. It’s a neat and functional design that works well.
All Z4s come with twin front and side airbags as standard, as well as electric windows, CD stereo and climate control. Not all have leather upholstery, though, so be careful to choose this desirable option. The Z4M’s interior is similarly equipped, with the only notable upgrade its more hip-holding sports seats.
BMW Z4 (2003 – 2009) models and specs
Dimensions | |
---|---|
Length | 4091–4113 mm |
Width | 1781 mm |
Height | 1299 mm |
Wheelbase | 2495–2497 mm |
Miscellaneous | |
---|---|
Kerb Weight | 1295–1485 kg |
Boot Space | 200–260 L |
Warranty | 3 years |
Servicing | - |
Costs | |
---|---|
List Price | £22,945–£43,900 |
Insurance Groups | - |
Road Tax Bands | I–M |
Official MPG | 23.3–38.2 mpg |
Euro NCAP Safety Ratings | |
---|---|
Adult | 4 |
Child | - |
Pedestrian | 2 |
Overall | - |
On sale until March 2008
Open Car | |||
---|---|---|---|
Version | List Price | MPG | 0-62 |
2.0i SE | £24,220 | 38.2 mpg | 8.2 s |
2.0i Sport | £26,805 | 38.2 mpg | 8.2 s |
2.5i SE | £26,260 | 34.4 mpg | 7.1 s |
2.5i SE Auto | £26,260 | - | - |
2.5i Sport | £28,845 | 34.4 mpg | 7.1 s |
2.5i Sport Auto | £28,845 | - | - |
2.5si SE | £29,060 | 34.0 mpg | 6.5 s |
2.5si SE Auto | £29,060 | - | - |
2.5si Sport | £31,420 | 34.0 mpg | 6.5 s |
2.5si Sport Auto | £31,420 | - | - |
3.0si SE | £33,510 | 33.2 mpg | 5.7 s |
3.0si SE Auto | £33,510 | - | - |
3.0si Sport | £34,940 | 33.2 mpg | 5.7 s |
3.0si Sport Auto | £34,940 | - | - |
M Roadster | £43,900 | 23.3 mpg | 5.0 s |
On sale until April 2006
Open Car | |||
---|---|---|---|
Version | List Price | MPG | 0-62 |
2.0i | £22,945 | 37.7 mpg | 8.2 s |
Model History
March 2003
Re-styled, re-suspended Z car handles much better than Z3. Of the the range the one to have is the 3.0i with BMW's 231bhp 3.0 litre straight six and six-speed manual gearbox, giving it a top speed of 155mph and 0-60 in 6.7 seconds.
Next down is a 192bhp 2.5 straight six which will do 146mph. Optional SSG sequential manual gearbox available on both. Also a 143bhp 2.0 litre Brit-built four in autumn 2003 and a 3.2 litre 345bhp M engine.
Z4 has perfect 50:50 weight distribution. Runflat tyres standard, leaving 260 litres of boot space capable of taking two golf bags. Pushbotton 'Dynamic Drive Control' allowing driver to select sportier response from accelerator and steering. 'Fade-free' high performance brakes. DSC III traction control. Electric folding soft-top with glass rear window.
2.5 8.9 l/100km, 216g/km CO2, 2.5 priced £26,650.
3.0 9.1 l/100km, 221g/km CO2, priced £30,850.
October 2003
170bhp 2.2 six from October 2003 at £24,225 OTR offers 0-60 in 7.4 seconds, top speed 140mph. Manual 5-speed standard. 5-speed Steptronic auto £1,350 extra (back to change up; forward to change down).
April 2004
300bhp Alpina Roadster S version from February 2004. 362Nm torque.6-speed manual ZF box. 172mph and 0-60 in 5.1. Combined mpg 28.5, CO2 238g/km. Alpina Z4 has special iron block 3.2 litre straight six. Very quick.
May 2005
Z4 4 cylinder 150bhp 2.0i launched May 2005. Does 0-60 in 7.9, top speed 136mph. New 16-valve engine is the same 1,995cc unit featured in the BMW 1 Series and BMW 320i Saloon and produces an impressive 150bhp at 6,200rpm and 200Nm of torque at 3,600rpm, from £22,755.
Very attractive coupe version shown at Frankfurt show 2005, in production 2006.
March 2006
Range refreshed for 2006
Z4 M has 343hp, does 0-60 in 4.8, top speed limited to 155.
Z4 3.0si develops 265hp at 6,600rpm and 315Nm of torque at 2,750rpm, does 0-60 in 5.5, top speed limited to 155. 32.8mpg combined.
Z4 2.5si has 218hp and 250Nm of torque, does 0-60 in 6.2, top speed 149, 33.6mpg combined.
Z4 2.5i has 177hp and 230Nm torque.
Z4 2.0i is 1,995cc four with 150bhp and 200Nm torque. Does 0-60 in 7.9 and tops out at 137.
All have 6 speed manual. On 2.5si and 3.0si six-speed auto with paddleshifts is optional.
March 2008
BMW Z4 Roadster 2.0i Edition Exclusive and Edition Sport models from March 2008: Four-cylinder open-topped Z4 customers also benefit from added value and financial benefits of an Edition model. Buyers are able to choose between the Z4 2.0i Edition Exclusive and Edition Sport models. Uniquely, Z4 Edition models will be produced in limited numbers, with less than 300 planned in 2008.
Z4 Edition Exclusive models are offered in a range of metallic colour choices; Sapphire Black, Stratus Grey, Space Grey, Titan Silver or Montego Blue. This is complemented by BMW’s Individual upholstery in full Soft Nappa leather. BMW Individual interior trim in high-gloss Piano Black and an upgraded 17-inch Star-spoke alloy wheel round off the offering. The Z4 Edition Exclusive model costs an additional £1,045 representing a customer saving of £1,835.
Customers who enjoy more sports-oriented roof-down driving will select the Z4 2.0i Edition Sport. The Edition Sport is available in a choice of metallic colours; Carbon Black, Black Sapphire, Space Grey, Titanium Silver and Montego Blue. And the sporting exterior design of the Z4 matches the interior with the Edition Sport models featuring BMW Individual Bi-colour New England leather covering the sports seats as well as Individual Bi-colour interior trim. The model is rounded off by visually-dynamic 18-inch Composite Star-spoke light-alloy wheels. The Z4 2.0i Edition Sport model costs just £775 more than the ‘standard’ Sport model but adds nearly £2,500 of options to the car.
What to watch out for
Water ingress into the hood motor, which is sited to the side of the passenger B pillar, leads to failure. The motor is placed inside a protective bag as this area is prone to water run off from the hood. To replace the motor the entire hood has to be removed from the car to allow access. Water ingress to the electric motor that drives the hydraulics is quite a common problem. The only way to check is to remove the soft top as the motor is inaccessible otherwise. Cost to replace can be £900; £1,400 if motor failure also blows the control unit, but BMW might contribute some goodwill.
www.caymanautos.co.uk specialise in fixing hoods. There was a known issue with early Z4's caused by the fact that their pumps were originally housed in plastic trays that fill with water leading to the pump seizing, cost to fix £650 or so (inc over £300 on parts and fluid) plus VAT. Saves about £500 on having it done by a BMW dealer.
Rear springs also prone to failure due to speed hump damage.
When Runflats fitted, TPMS valves prone to failure due to corrosion battery effect between metal valve caps and the valve stems. This is easily prevented by fitting plastic instead of metal valve caps.
If the car has Bluetooth and the owner has their Mobile phone synched to the car then if the car is not locked / all electrics shut down the car will keep trying to search for the phone and drain the battery.
16-12-2011:Complaint of hood leaking after 7 years and door mirror glass falling out of mirror pods.
01-01-2012:Strange report of terminal corrosion of exhaust manifold and exhaust system on 4 year old Z4 (no mention of which engine) at 32,000 miles. The car had only been serviced twice and had been taken to Cyprus.
30-07-2012:Another report of hood motor failure due to being swamped by water ingress.
02-06-2014:DSC failed on 31k mile 2008/58 Z4. Reader charged £2,000 for replacement.
21-01-2017:Report of condensation inside foglights of a 2006 BMW Z4.
24-10-2017:Problems with 2005 BMW Z4 bought used in 2016 have included replacing the sensors in the catalytic converter, fitting a new electric motor and pump for the soft top, replacung the wind screen washer pump. Now the alarm system is playing up.
07-05-2019:"Sticky and jumpy" power steering reported in 2006 BMW Z4. Probably the EPAS motor wearing out.