BMW Z4 2009 Roadster sDrive23i
BMW Z4 2009 2.5 petrol description
Cabrio BMW Z4 2009 Roadster sDrive23i has been produced from January, 2009 to January, 2013. It has six-cylinder petrol engine with displacement of 2.5 litres, which produces power of 204 horsepower on 6400 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 2009 Roadster sDrive23i has classical rear wheel drive (RWD) and manual gearbox with 6 gears.
BMW Z4 2009 Roadster sDrive23i accelerates to speed 100 kilometres per hour in 6.6 seconds. The maximum speed of this car is 242 km/h.
The fuel consumption of this BMW Z4 2009 Roadster sDrive23i in combined mode (combining urban and highway driving) is 8.5 litres per 100km (11.8 km/l), city fuel economy - 12.4 l/100km, fuel consumption on highway - 6.2 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 880 kilometers on highway.
According to user reviews, this BMW real everyday fuel consumption is 8.8 litres per 100 km, which is 4% more than the manufacturer's stated. More - Real BMW Z4 fuel consumption.

BMW Z4 2009 Roadster sDrive23i technical data
Model: | BMW Z4 Roadster sDrive23i | ||
---|---|---|---|
Body style: | Cabrio | ||
Production period: | 2009. January ... 2013. January | ||
Engine: | 2497 cm3 Petrol, 6 cylinders | CO2 emissions: | 199 g/km |
Power: | 204 HP ON 6400 RPM | Torque: | 250 NM ON 2750 RPM |
Gearbox: | Manual gearbox (6 gears) | Drive type: | Rear wheel drive (RWD) |
Maximum speed: | 242 km/h | Acceleration 0-100 km/h: | 6.6 seconds |
Fuel consumption (l/100km): | 8.5 (combined) 12.4 (urban) 6.2 (highway) | ||
Real fuel consumption: | 8.8 l/100km (26.7 MPG) by user reviews from various sources | ||
Fuel tank capacity: | 55 litres (14.5 gallons) | ||
Car dimensions: | 4.24m (length) 1.79m (width) 1.29m (height) | ||
Turning diameter: | 10.7 meters | ||
Trunk capacity: | 180 litres | ||
Trunk max capacity: | 310 litres (with rear seats folded down) | ||
Gross weight: | 1735 kg |
BMW Z4 2009 Roadster sDrive23i 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 2009 Roadster sDrive23i oil type | 5W-30 |
Oil capacity | 6.5 litres (6.9 quarts) More service info |
Coolant capacity | 8.2 litres (8.7 quarts) |
Power | 177 - 218 HP ON 6400 RPM |
Torque | 230 - 250 NM ON 2750 RPM |
Start of production (year) | 2004 |
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 [2009 - 2013] modifications
Modification | Engine | Power | Consumption | Gearbox |
---|---|---|---|---|
BMW Z4 2011 2.0 20i
Jan 2011 — Dec 2013 Most fuel efficient version |
2.0 Petrol | 184 HP | 6.8 l/100km | Manual (6) |
BMW Z4 2011 2.0 20i
Jan 2011 — Dec 2013 Most fuel efficient version |
2.0 Petrol | 184 HP | 6.8 l/100km | Automatic (8) |
BMW Z4 2011 2.0 28i
Jan 2011 — Dec 2013 Most fuel efficient version |
2.0 Petrol | 245 HP | 6.8 l/100km | Manual (6) |
BMW Z4 2011 2.0 28i
Jan 2011 — Dec 2013 Most fuel efficient version |
2.0 Petrol | 245 HP | 6.8 l/100km | Automatic (8) |
BMW Z4 2009 2.5 Roadster sDrive23i Jan 2009 — Jan 2013 | 2.5 Petrol | 204 HP | 8.5 l/100km | Manual (6) |
BMW Z4 2009 2.5 Roadster sDrive23i Jan 2009 — Jan 2013 | 2.5 Petrol | 204 HP | 8.2 l/100km | Automatic (6) |
BMW Z4 2009 3.0 Roadster sDrive30i Jan 2009 — Jan 2013 | 3.0 Petrol | 258 HP | 8.5 l/100km | Manual (6) |
BMW Z4 2009 3.0 Roadster sDrive30i Jan 2009 — Jan 2013 | 3.0 Petrol | 258 HP | 8.3 l/100km | Automatic (6) |
BMW Z4 2009 3.0 Roadster sDrive35i Jan 2009 — Jan 2013 | 3.0 Petrol | 306 HP | 7.0 l/100km | Manual (6) |
BMW Z4 2009 3.0 Roadster sDrive35i Jan 2009 — Jan 2013 | 3.0 Petrol | 306 HP | 9.0 l/100km | Automatic (7) |
BMW Z4 2010 3.0 Roadster sDrive35is
Jan 2010 — Jan 2013 Most dynamic version - 100 km/h in 4.8 seconds |
3.0 Petrol | 340 HP | 9.0 l/100km | Automatic (7) |