BMW Z4 2006 Roadster 2.5si
BMW Z4 2006 2.5 petrol description
Cabrio BMW Z4 2006 Roadster 2.5si has been produced from March, 2006 to January, 2009. It has six-cylinder petrol engine with displacement of 2.5 litres, which produces power of 218 horsepower on 6500 rpm and torque 250 Nm (Newton metres) on 2750 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 4 and Euro 5 emission standards available. Average engine life expectancy (mileage before serious repairs are needed) is from 220 000 to 370 000 kilometres. It is important to remember that engine life is highly dependent on regular maintenance and the quality of the oils and fuels used.
More engine specs
On this engine, the valve seals and crankcase breather valve diaphragm tend to fail after ...
This BMW Z4 2.5 engine oil type is 5W-30 and oil capacity is 6.5 litres.
BMW Z4 2006 Roadster 2.5si has classical rear wheel drive (RWD) and manual gearbox with 6 gears.
BMW Z4 2006 Roadster 2.5si accelerates to speed 100 kilometres per hour in 6.5 seconds. The maximum speed of this car is 240 km/h.
The fuel consumption of this BMW Z4 2006 Roadster 2.5si in combined mode (combining urban and highway driving) is 8.4 litres per 100km (11.9 km/l) - this is one of most fuel efficient BMW Z4 2006 - 2009 versions, fuel consumption in city - 12 l/100km, highway fuel economy - 6.3 l/100km. Fuel tank capacity is 55 litres or 14.53 gallons, which gives a mileage up to 640 kilometers without refueling in urban cycle and even up to 860 kilometers on highway.
According to user reviews, this BMW real everyday fuel consumption is 9.5 litres per 100 km, which is 13% more than the manufacturer's stated. More - Real BMW Z4 fuel consumption.
BMW Z4 2006 Roadster 2.5si technical data
| Model: | BMW Z4 Roadster 2.5si | ||
|---|---|---|---|
| Body style: | Cabrio | ||
| Production period: | 2006. March ... 2009. January | ||
| Engine: | 2497 cm3 Petrol, 6 cylinders | CO2 emissions: | 202 g/km |
| Power: | 218 HP ON 6500 RPM | Torque: | 250 NM ON 2750 RPM |
| Gearbox: | Manual gearbox (6 gears) | Drive type: | Rear wheel drive (RWD) |
| Maximum speed: | 240 km/h | Acceleration 0-100 km/h: | 6.5 seconds |
| Fuel consumption (l/100km): | 8.4 (combined) 12.0 (urban) 6.3 (highway) | ||
| Real fuel consumption: | 9.5 l/100km (24.8 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: | 1585 kg | ||
BMW Z4 2006 Roadster 2.5si engine N52B25
Engine reliability and common problems:
On this engine, the valve seals and crankcase breather valve diaphragm tend to fail after 80-100 000 km, leading to increased oil consumption. It is recommended to choose engines manufactured in the last years of production (after 2010). The engine is not suitable for power boost modifications.Overall, this engine can last around 220,000 to 370,000 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 | 2497 cm3 |
|---|---|
| Number of cylinders | 6 |
| Bore (cylinder diameter) | 82 mm |
| Stroke length (piston move) | 78.8 mm |
| Compression ratio | 11 : 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 | 120,000 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 2006 Roadster 2.5si oil type | 5W-30 |
| Oil capacity | 6.5 litres (6.9 quarts) More service info |
| Power | 177 - 218 HP ON 6500 RPM |
| Torque | 230 - 250 NM ON 2750 RPM |
| Start of production (year) | 2004 |
| Duration of production | 7 years |
Often in the first years of production, engines tend to have various constructive problems, so it is recommended to choose a car with this engine from 2007 onwards. |
|
| 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. |
Most often compared to
All BMW Z4 cabrio [2006 - 2009] modifications
| Modification | Engine | Power | Consumption | Gearbox |
|---|---|---|---|---|
|
BMW Z4 2006 Roadster 2.0i
Mar 2006 — Jan 2009 Most fuel efficient version |
2.0 Petrol | 150 HP | 7.5 l/100km | Manual (6) |
| BMW Z4 2006 Roadster 2.5i Mar 2006 — Jan 2009 | 2.5 Petrol | 177 HP | 8.2 l/100km | Manual (6) |
| BMW Z4 2006 Roadster 2.5i Mar 2006 — Jan 2009 | 2.5 Petrol | 177 HP | 8.4 l/100km | Automatic (6) |
| BMW Z4 2006 Roadster 2.5si Mar 2006 — Jan 2009 | 2.5 Petrol | 218 HP | 8.4 l/100km | Manual (6) |
| BMW Z4 2006 Roadster 2.5si Mar 2006 — Jan 2009 | 2.5 Petrol | 218 HP | 9.0 l/100km | Automatic (6) |
| BMW Z4 2006 Roadster 3.0si Mar 2006 — Jan 2009 | 3.0 Petrol | 265 HP | 8.6 l/100km | Manual (6) |
| BMW Z4 2006 Roadster 3.0si Mar 2006 — Jan 2009 | 3.0 Petrol | 265 HP | 9.0 l/100km | Automatic (6) |
|
BMW Z4 2006 M 3.2
Jan 2006 — Dec 2008 Most dynamic version - 100 km/h in 5 seconds |
3.2 Petrol | 343 HP | 12.2 l/100km | Manual (6) |