BMW Z4 2003 Roadster 2.5i
BMW Z4 2003 2.5 petrol description
Cabrio BMW Z4 2003 Roadster 2.5i has been produced from March, 2003 to March, 2006. It has six-cylinder petrol engine with displacement of 2.5 litres, which produces power of 192 horsepower on 6000 rpm and torque 245 Nm (Newton metres) on 3500 revolutions per minute.
This 6-cylinder 24-valve engine camshaft is driven by chain (What is an engine chain and belt? ). Engine has fuel injection system without turbocharger. Engine versions compliant with Euro 3 and Euro 4 emission standards available. Average engine life expectancy (mileage before serious repairs are needed) is from 280 000 to 480 000 kilometres. Note that engine life can be longer or shorter depending on maintenance.
More engine specs
This BMW Z4 2.5 engine oil type is 5W-30 and oil capacity is 6.5 litres.
BMW Z4 2003 Roadster 2.5i has classical rear wheel drive (RWD) and automatic gearbox with 5 gears.
BMW Z4 2003 Roadster 2.5i accelerates to speed 100 kilometres per hour in 7.5 seconds. The maximum speed of this car is 227 km/h.
The fuel consumption of this BMW Z4 2003 Roadster 2.5i in combined mode (combining urban and highway driving) is 9.5 litres per 100km (10.5 km/l), fuel consumption in city - 13.5 l/100km, highway fuel economy - 7.3 l/100km. Fuel tank capacity is 55 litres or 14.53 gallons, which gives a mileage up to 560 kilometers without refueling in urban cycle and even up to 740 kilometers on highway.
According to user reviews, this BMW real everyday fuel consumption is 10.6 litres per 100 km, which is 12% more than the manufacturer's stated. More - Real BMW Z4 fuel consumption.
BMW Z4 safety
During safety testing BMW Z4 has obtained 4 stars from five, which means good safety level.
Adults (driver and passenger) safety of BMW Z4 is evaluated with four stars, and for pedestrian protection BMW Z4 got two stars.
BMW Z4 2003 Roadster 2.5i technical data
| Model: | BMW Z4 Roadster 2.5i | ||
|---|---|---|---|
| Body style: | Cabrio | ||
| Production period: | 2003. March ... 2006. March | ||
| Engine: | 2494 cm3 Petrol, 6 cylinders | CO2 emissions: | 231 g/km |
| Power: | 192 HP ON 6000 RPM | Torque: | 245 NM ON 3500 RPM |
| Gearbox: | Automatic gearbox (5 gears) | Drive type: | Rear wheel drive (RWD) |
| Maximum speed: | 227 km/h | Acceleration 0-100 km/h: | 7.5 seconds |
| Fuel consumption (l/100km): | 9.5 (combined) 13.5 (urban) 7.3 (highway) | ||
| Real fuel consumption: | 10.6 l/100km (22.2 MPG) by user reviews from various sources | ||
| Fuel tank capacity: | 55 litres (14.5 gallons) | ||
| Car dimensions: | 4.09m (length) 1.78m (width) 1.30m (height) | ||
| Turning diameter: | 9.8 meters | ||
| Trunk capacity: | 240 litres | ||
| Trunk max capacity: | 260 litres (with rear seats folded down) | ||
| Gross weight: | 1560 kg | ||
BMW Z4 2003 Roadster 2.5i engine M54B25
Engine reliability:
Overall, this engine can last around 280,000 to 480,000 km if properly maintained, using the correct quality oil and fuel, and carrying out regular checks and maintenance.The engine has hydraulic valve tappets (lifters), which provide quieter operation and do not require periodic adjustment, but are more complex in design and can cause serious engine damage in the event of failure.
| Engine displacement | 2494 cm3 |
|---|---|
| Number of cylinders | 6 |
| Bore (cylinder diameter) | 84 mm |
| Stroke length (piston move) | 75 mm |
| Compression ratio | 10.5 : 1 |
| Camshaft drive | Timing chain Chain motors are considered more reliable, chain replacement usually is required less often than a timing belt, but they are often louder and vibrate more. More service info |
| Timing chain change interval | 250,000 km (recommended) Sometimes manufacturers do not specify timing chain replacement intervals and design chains for engine life. However, once the recommended change interval has been reached, it is recommended to periodically check the condition of the chain and to change the chain if excessive stretching is detected or if unusual noises from the engine or other symptoms occur. |
| Fuel system | Injection |
| BMW Z4 2003 Roadster 2.5i oil type | 5W-30 |
| Oil capacity | 6.5 litres (6.9 quarts) More service info |
| Coolant capacity | 8.3 litres (8.8 quarts) |
| Power | 192 HP ON 6000 RPM |
| Torque | 245 NM ON 3500 RPM |
| Start of production (year) | 2000 |
| Duration of production | 7 years |
| Engine also used on | BMW 5 sērija BMW 3 sērija BMW X3 |
Generally, the use of an engine in several models and its long production run is an indication of the quality of the engine and the success of its design. |
All BMW Z4 cabrio [2003 - 2006] modifications
| Modification | Engine | Power | Consumption | Gearbox |
|---|---|---|---|---|
|
BMW Z4 2005 Roadster 2.0i
Apr 2005 — Mar 2006 Most fuel efficient version |
2.0 Petrol | 150 HP | 7.5 l/100km | Manual (5) |
| BMW Z4 2003 Roadster 2.2i Sep 2003 — Mar 2006 | 2.2 Petrol | 170 HP | 8.8 l/100km | Manual (5) |
| BMW Z4 2003 Roadster 2.2i Sep 2003 — Mar 2006 | 2.2 Petrol | 170 HP | 9.3 l/100km | Automatic (5) |
| BMW Z4 2003 Roadster 2.5i | 2.5 Petrol | 192 HP | 8.9 l/100km | Manual (5) |
| BMW Z4 2003 Roadster 2.5i | 2.5 Petrol | 192 HP | 9.5 l/100km | Automatic (5) |
|
BMW Z4 2003 Roadster 3.0i
Most dynamic version - 100 km/h in 5.9 seconds |
3.0 Petrol | 231 HP | 9.1 l/100km | Manual (6) |
|
BMW Z4 2003 Roadster 3.0i
Most powerfull version (231 HP) |
3.0 Petrol | 231 HP | 9.5 l/100km | Automatic (5) |