BMW Z4 2018 M40i (G29)
BMW Z4 2018 3.0 petrol description
Cabrio BMW Z4 2018 M40i is being produced from January, 2018. It has six-cylinder petrol engine with displacement of 3.0 litres, which produces power of 340 horsepower on 6500 rpm - this is the most powerfull BMW Z4 2018 version and torque 500 Nm (Newton metres) on 1600 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 and Twin-Scroll turbine. The engine meets the Euro 6 emissions standard. Approximate engine life expectancy (mileage until serious repairs are required) for this engine is between 210 000 and 360 000 kilometres. Note that engine life can be longer or shorter depending on maintenance.
More engine specs
The B58 engine, compared to its predecessor, features a 20% increase in boost pressure, a closed-deck cylinder block design, an increased compression ratio of 11.0:1, and a slightly larger displacement of 2998 cc, up from 2979 cc, with an additional weight of 8 ...
This BMW Z4 3.0 engine oil type is 0W-20, 0W-30, 5W-30 and oil capacity is 6.5 litres.
BMW Z4 2018 M40i has classical rear wheel drive (RWD) and automatic gearbox with 8 gears.
BMW Z4 2018 M40i accelerates to speed 100 kilometres per hour in 4.5 seconds. The maximum speed of this car is 250 km/h.
In combined cycle (city and motorway), the BMW Z4 2018 M40i fuel consumption is 7.4 litres per 100km (13.5 km/l), fuel consumption in city - 9.2 l/100km, highway fuel economy - 6.3 l/100km. Fuel tank capacity is 52 litres or 13.74 gallons, which gives a mileage up to 700 kilometers without refueling in urban cycle and even up to 820 kilometers on highway.
According to user reviews, this BMW real everyday fuel consumption is 9 litres per 100 km, which is 22% more than the manufacturer's stated. More - Real BMW Z4 fuel consumption.
BMW Z4 safety
During safety testing BMW Z4 has obtained 5 stars from five, which means very high safety level.
Adults (driver and passenger) safety of BMW Z4 is evaluated with outstanding rate 97 from 100, children safety: very good mark - 87 from 100, for pedestrian protection BMW Z4 got 91 points from 100.
BMW Z4 safety equipment has been rated as good - 76 percents from 100.
BMW Z4 2018 M40i technical data
| Model: | BMW Z4 M40i | ||
|---|---|---|---|
| Body style: | Cabrio | ||
| Production period: | 2018. January | ||
| Engine: | 2998 cm3 Petrol, 6 cylinders | CO2 emissions: | 168 g/km |
| Power: | 340 HP ON 6500 RPM | Torque: | 500 NM ON 1600 RPM |
| Gearbox: | Automatic gearbox (8 gears) | Drive type: | Rear wheel drive (RWD) |
| Top speed: | 250 km/h | Acceleration 0-100 km/h: | 4.5 seconds |
| Fuel consumption (l/100km): | 7.4 (combined) 9.2 (urban) 6.3 (highway) | ||
| Real fuel consumption: | 9 l/100km (26.1 MPG) by user reviews from various sources | ||
| Fuel tank capacity: | 52 litres (13.7 gallons) | ||
| Car dimensions: | 4.32m (length) 1.86m (width) 1.30m (height) | ||
| Turning diameter: | 11 meters | ||
| Trunk capacity: | 281 litres | ||
| Gross weight: | 1860 kg | ||
BMW Z4 2018 M40i engine B58B30M0
Engine reliability and common problems:
The B58 engine, compared to its predecessor, features a 20% increase in boost pressure, a closed-deck cylinder block design, an increased compression ratio of 11.0:1, and a slightly larger displacement of 2998 cc, up from 2979 cc, with an additional weight of 8 kg. Despite its advancements, the engine has several common issues.Coolant leaks are frequently reported, often linked to a drop in coolant levels without an obvious cause. In some cases, replacing the expansion tank cap resolves the issue. Head gasket failure is another recurring problem due to the engine's high operating temperatures. Symptoms include a strong smell of burning oil and sometimes visible smoke. Oil leaks are also common, originating from areas such as the oil filter housing, oil cooler, or head gasket. Prompt repairs are crucial to prevent oil starvation and potential engine damage.
The B58, like many direct-injection engines, often experiences carbon buildup on intake valves, leading to fluctuating idle and reduced performance. Less frequently, issues arise with the VANOS system, responsible for variable valve timing. Symptoms include power loss, uneven idle, stalling, and high fuel consumption. VANOS problems typically appear around 80,000–100,000 km. Oil filter disintegration is another concern, with parts of the filter sometimes breaking off and getting stuck in the housing. This can lead to oil leaks and other complications, often caused by low-quality filters or improper replacement.
Additionally, valve cover gaskets are prone to leaks, with symptoms such as the smell of burning oil, smoke, or low oil level warnings. Plastic valve covers can also crack over time. These issues usually arise between 60,000 and 100,000 km. Some BMW G-series models produced before 2021 may encounter failures in the oil pump due to a design flaw in the internal bushing. The recommended solution is upgrading to the sixth revision oil pump with a metal component.
Overall, while the B58 engine is a significant improvement in performance and efficiency, these known issues highlight the importance of regular maintenance, timely repairs, and the use of high-quality parts to ensure reliability.
Overall, this engine can last around 210,000 to 360,000 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 | 2998 cm3 |
|---|---|
| Number of cylinders | 6 |
| Bore (cylinder diameter) | 82 mm |
| Stroke length (piston move) | 94.6 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. |
| Fuel system | Injection |
| BMW Z4 2018 M40i oil type | 0W-20, 0W-30, 5W-30 |
| Oil capacity | 6.5 litres (6.9 quarts) |
| Power | 326 - 340 HP ON 6500 RPM |
| Torque | 450 - 500 NM ON 1600 RPM |
| Start of production (year) | 2015 |
| Duration of production | 10 years |
| Engine also used on | BMW 5 sērija BMW 3 sērija BMW X5 BMW 7 sērija BMW 1 sērija and 7 other models |
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 [2018 modifications
| Modification | Engine | Power | Consumption | Gearbox | Drive type |
|---|---|---|---|---|---|
|
BMW Z4 2018 2.0 20i
Most fuel efficient version by real consumption |
2.0 Petrol | 197 HP | - | Manual (6) | Rear wheel |
|
BMW Z4 2018 2.0 20i
Jan 2018 — Dec 2019 Most fuel efficient version |
2.0 Petrol | 197 HP | 6.1 l/100km | Automatic (8) | Rear wheel |
|
BMW Z4 2018 2.0 30i
Most fuel efficient version |
2.0 Petrol | 258 HP | 6.1 l/100km | Automatic (8) | Rear wheel |
|
BMW Z4 2018 3.0 M40i
Most dynamic version - 100 km/h in 4.5 seconds |
3.0 Petrol | 340 HP | 7.4 l/100km | Automatic (8) | Rear wheel |
|
BMW Z4 2018 3.0 M40i 4x4
Most dynamic version - 100 km/h in 4.5 seconds |
3.0 Petrol | 340 HP | - | Automatic (8) | All wheel |