BMW M440i AT xDrive (G22)

BMW 4 series 2020 3.0 petrol description

Coupe BMW M440i AT xDrive has been produced from 2020 to 2024. It has six-cylinder petrol engine with displacement of 3.0 litres, which produces power of 374 horsepower on 5500 rpm and torque 500 Nm (Newton metres) on 1900 revolutions per minute. It is an MHEV (Mild Hybrid) hybrid vehicle, with electric motor that assists the internal combustion engine, however, the car cannot run on electric power alone, and the battery is charged while driving (external charging is not available).

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. Remember that engine life depends on regular maintenance and the quality of the materials used (oils, fuels, etc.).
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 4 series 3.0 engine oil type is 0W-20, 0W-30, 5W-30 and oil capacity is 6.5 litres.

BMW M440i AT xDrive has all four wheel drive (AWD, 4x4) and automatic gearbox with 8 gears.
BMW M440i AT xDrive 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 M440i AT xDrive fuel consumption is 7.1 litres per 100km (14.1 km/l), city fuel economy - 9 l/100km, fuel consumption on highway - 6 l/100km. Fuel tank capacity is 59 litres or 15.59 gallons, which gives a mileage up to 820 kilometers without refueling in urban cycle and even up to 980 kilometers on highway.
According to user reviews, this BMW real everyday fuel consumption is 9.2 litres per 100 km, which is 30% more than the manufacturer's stated. More - Real BMW 4 series fuel consumption.

With the same engine there is also BMW 4 series version with rear wheel drive and automatic gearbox (BMW M440i 374 Hp Automatic AT) available, which is more sluggish, reaching 100 km/h 0.3 seconds later (in 4.8 seconds), but manufacturer's fuel consumption is higher by 1 litres per 100 km or 14 % - 8.1 litres per 100 km.
BMW 4 series 2020

BMW M440i AT xDrive technical data

Model: BMW M440i AT xDrive
Body style: Coupe
Production period: 2020. January ... 2024. December 
Engine: 2998 cm3 Petrol, 6 cylinders CO2 emissions: no data
Power: 374 HP ON 5500 RPM Torque: 500 NM ON 1900 RPM
Gearbox: Automatic gearbox (8 gears) Drive type: All wheel drive (AWD, 4x4)
Top speed: 250 km/h Acceleration 0-100 km/h: 4.5 seconds
Fuel consumption (l/100km): 7.1 (combined) 9.0 (urban) 6.0 (highway)
Battery capacity: 0.4 kWh (total)
Real fuel consumption: 9.2 l/100km (25.6 MPG) by user reviews from various sources
Fuel tank capacity: 59 litres (15.6 gallons)
Car dimensions: 4.77m (length) 1.85m (width) 1.39m (height)
Turning diameter: 12 meters
Ground clearance: 130 mm (approximate, with standard suspension, unladen vehicle)
Seats: 4 seats
Gross weight: 2245 kg Net weight: 1804 kg Load capacity: 441 kg

BMW M440i AT xDrive engine B58B30O1

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 M440i AT xDrive oil type 0W-20, 0W-30, 5W-30
Oil capacity 6.5 litres (6.9 quarts)
Coolant capacity 10.5 litres (11.1 quarts)
Power 360 - 374 HP ON 5500 RPM
Torque 500 NM ON 1900 RPM
Start of production (year) 2015
Duration of production 11 years
Engine also used on BMW 3 sērija BMW X3 BMW X4

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 4 series coupe [2020 - 2024] modifications

Modification Engine Power Consumption Drive type
BMW 420i

Most fuel efficient petrol version

2.0 Petrol 184 HP 5.8 l/100km Rear wheel
BMW 430i 2.0 Petrol 258 HP 7.4 l/100km Rear wheel
BMW 420d

Most fuel efficient diesel version

2.0 Diesel
MHEV hybrid engine
190 HP 4.2 l/100km Rear wheel
BMW 420d xDrive 4x4 2.0 Diesel
MHEV hybrid engine
190 HP 4.6 l/100km All wheel
BMW M440i 374 Hp Automatic Jan 2021 — Dec 2024 3.0 Petrol
MHEV hybrid engine
374 HP 8.1 l/100km Rear wheel
BMW M440i AT xDrive 4x4

Most dynamic version - 100 km/h in 4.5 seconds

3.0 Petrol
MHEV hybrid engine
374 HP 7.1 l/100km All wheel
BMW M440i 382 Hp

Most powerfull petrol version (382 HP)

3.0 Petrol
MHEV hybrid engine
382 HP 8.7 l/100km Rear wheel
BMW 430d 4x4 Jan 2021 — Dec 2024 3.0 Diesel
MHEV hybrid engine
286 HP 5.9 l/100km All wheel
BMW M440d 4x4 Jan 2021 — Dec 2024

Most powerfull diesel version (340 HP)

3.0 Diesel
MHEV hybrid engine
340 HP 6.3 l/100km All wheel
BMW 4 series 2020 reviews
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