When BMW unveiled the official specifications for the 2017 BMW 440i, it marked a historic shift for the 4 Series lineup. Replacing the outgoing 435i, the 440i introduced BMW’s modular B58 3.0-liter turbocharged inline six-cylinder engine, generating 320 horsepower and 330 lb-ft of torque. Available in Coupe, Gran Coupe, and Convertible body styles, the 440i combined enhanced power delivery, refined suspension tuning, and upgraded onboard technology.
Overview of the 2017 BMW 440i Debut
The 2017 model year represented a pivotal moment for BMW's midsize luxury performance family. As part of BMW’s broader engine family overhaul across the 3 Series and 4 Series designations, the badge change from 435i to 440i reflected a substantial leap in mechanical architecture rather than a simple cosmetic trim update.
While the exterior silhouette retained the sleek, athletic stance introduced with the F32 (Coupe), F33 (Convertible), and F36 (Gran Coupe) platform generations, under-the-hood engineering was thoroughly re-engineered. The 2017 BMW 440i bridged the gap between standard luxury daily drivers and the high-performance M4, delivering accessible power, high torque headroom, and driver-focused dynamics in rear-wheel drive (RWD) and xDrive all-wheel drive configurations.
- 2017 BMW 440i Range
- Body Styles: F32 Coupe, F36 Gran Coupe, F33 Convertible
- Engine Architecture: 3.0L B58 TwinPower Turbo I6 (320 HP / 330 lb-ft Torque)
- Transmission Options: 6-Speed Manual | 8-Speed Sport Auto
- Drivetrain Options: Rear-Wheel Drive (RWD) / xDrive
Engine and Drivetrain: The Legendary B58 Inline-Six
The defining feature of the 2017 BMW 440i is its powertrain. The introduction of the B58 engine (specifically the B58B30M0 variant) marked the retirement of the older N55 engine used in the 435i. The B58 quickly gained recognition as one of the finest inline-six engines ever engineered by BMW.
Engine Architecture and TwinPower Turbo Technology
The B58 is a 3.0-liter (2,998 cc) longitudinal inline-six engine utilizing a single twin-scroll turbocharger. Unlike its N55 predecessor, which utilized an open-deck block, the B58 features a closed-deck aluminum engine block construction. This design significantly increases structural rigidity, enabling the engine to withstand higher cylinder pressures and thermal stress.
Key technical highlights of the 2017 BMW 440i engine include:
- Twin-Scroll Turbocharging: A single twin-scroll turbocharger routes exhaust gases from two separate sets of three cylinders into separate spirals (scrolls) in the turbine housing. This minimizes exhaust pulse interference, drastically reducing turbo lag and optimizing throttle response across low and mid RPM bands.
- Heat Encapsulation System: BMW integrated thermal insulation around the engine block and sump to retain heat for up to 36 hours. This feature speeds up warm-up times during cold starts, reducing engine wear and lowering initial emissions.
- Intake Manifold Intercooling: The B58 substitutes a traditional air-to-air intercooler for an indirect air-to-water intercooler integrated directly into the intake manifold. This shortens the intake air path, improving engine response and air-charge cooling efficiency.
- Valvetronic and Double-VANOS: BMW’s fully variable valve lift system (Valvetronic) works alongside variable camshaft timing (Double-VANOS) on both intake and exhaust sides to optimize breathing across the entire rev range.
The stock engine produces 320 horsepower between 5,500 and 6,500 RPM and 330 lb-ft of torque available from a low 1,380 RPM up to 5,000 RPM.
Transmission Options and Drivetrain Configurations
BMW offered two main transmissions for the 2017 440i:
- 6-Speed Manual Transmission: Standard on the rear-wheel drive Coupe in North America and select global markets. It included dual-mass flywheels and automated dual-clutch rev-matching technology (which downshifts smoothly by automatically blipping the throttle).
- 8-Speed Steptronic Sport Automatic: Engineered by ZF (8HP50), this transmission came standard on the Gran Coupe and Convertible, and was a no-cost option on the Coupe. It features paddle shifters mounted on the steering wheel, optimized gear ratios, and launch control software.
Both transmission variants could be paired with standard Rear-Wheel Drive (RWD) or BMW's intelligent xDrive All-Wheel Drive system. The xDrive setup continuously monitors vehicle speed, wheel slip, and steering angle, using an electronically controlled multi-plate clutch to transfer up to 100% of available engine torque between the front and rear axles in milliseconds.
Detailed Technical Specifications Table
The following factory specifications reflect the 2017 BMW 440i across its primary body styles and drivetrain configurations:
| Feature / Metric | 440i Coupe (RWD Automatic) | 440i Coupe (xDrive Automatic) | 440i Gran Coupe (xDrive Auto) | 440i Convertible (RWD Auto) |
|---|---|---|---|---|
| Engine Code | B58B30M0 | B58B30M0 | B58B30M0 | B58B30M0 |
| Engine Type | TwinPower Turbo Inline 6-Cyl | TwinPower Turbo Inline 6-Cyl | TwinPower Turbo Inline 6-Cyl | TwinPower Turbo Inline 6-Cyl |
| Displacement | 2,998 cc (3.0 Liters) | 2,998 cc (3.0 Liters) | 2,998 cc (3.0 Liters) | 2,998 cc (3.0 Liters) |
| Horsepower | 320 hp @ 5,500–6,500 RPM | 320 hp @ 5,500–6,500 RPM | 320 hp @ 5,500–6,500 RPM | 320 hp @ 5,500–6,500 RPM |
| Torque | 330 lb-ft @ 1,380–5,000 RPM | 330 lb-ft @ 1,380–5,000 RPM | 330 lb-ft @ 1,380–5,000 RPM | 330 lb-ft @ 1,380–5,000 RPM |
| Compression Ratio | 11.0:1 | 11.0:1 | 11.0:1 | 11.0:1 |
| 0–60 MPH Time | 4.8 seconds | 4.6 seconds | 4.7 seconds | 5.1 seconds |
| Top Speed | 130 mph (155 mph optional) | 130 mph (155 mph optional) | 130 mph (155 mph optional) | 130 mph (155 mph optional) |
| Curb Weight | ~3,570 lbs | ~3,740 lbs | ~3,820 lbs | ~4,110 lbs |
| Weight Distribution | 50.1% Front / 49.9% Rear | 52.3% Front / 47.7% Rear | 51.5% Front / 48.5% Rear | 48.0% Front / 52.0% Rear |
| Fuel Tank Capacity | 15.8 gallons (60 L) | 15.8 gallons (60 L) | 15.8 gallons (60 L) | 15.8 gallons (60 L) |
| EPA Fuel Economy | 21 City / 32 Hwy / 25 Comb | 21 City / 31 Hwy / 25 Comb | 21 City / 31 Hwy / 25 Comb | 21 City / 29 Hwy / 24 Comb |
Performance Metrics and Acceleration Benchmarks
The official power gains over the outgoing 435i (+20 hp and +30 lb-ft of torque) translated into noticeable real-world speed improvements.
- 0-60 MPH Acceleration Benchmarks (Seconds)
- 440i Coupe xDrive (Auto): 4.6s
- 440i Gran Coupe xDrive: 4.7s
- 440i Coupe RWD (Auto): 4.8s
- 440i Coupe RWD (Manual): 4.9s
- 440i Convertible RWD (Auto): 5.1s
Acceleration and Quarter-Mile Performance
The 2017 440i Coupe equipped with xDrive and the 8-speed automatic posted official 0–60 mph acceleration times of 4.6 seconds, though independent magazine testing frequently logged times as fast as 4.4 seconds under ideal track conditions.
- Quarter-Mile Execution: In stock configuration, the 440i xDrive Coupe covers the quarter-mile in roughly 13.1 seconds at 106–108 mph.
- In-Gear Acceleration: Thanks to peak torque arriving at just 1,380 RPM, 50–70 mph highway passing maneuvers require virtually no downshifting delay, delivering rapid power instantly.
Top Speed, Braking, and Handling Dynamics
- Top Speed Limits: Standard models came electronically governed to 130 mph (210 km/h) when fitted with standard all-season tires. Opting for mixed performance summer tires or the optional Track Handling Package raised the speed governor to 155 mph (250 km/h).
- Chassis and Suspension: The chassis features a double-pivot spring strut front suspension and a five-link independent rear axle assembly. Aluminum control arms and swivel bearings reduce unsprung mass, preserving turn-in precision.
- Braking Hardware: Standard braking hardware consists of four-piston fixed aluminum front calipers and single-piston floating rear calipers acting on ventilated disc brakes.
Fuel Economy and Real-World Efficiency
Despite producing 320 horsepower, the B58 engine’s thermodynamic design makes the 2017 440i surprisingly efficient for a performance luxury vehicle.
EPA ratings for the 2017 440i Coupe RWD automatic stand at 21 mpg city, 32 mpg highway, and 25 mpg combined. Equipping xDrive all-wheel drive drops the highway rating slightly to 31 mpg, while the manual transmission Coupe delivers 19 mpg city / 29 mpg highway.
Real-world long-distance highway cruising frequently matches or exceeds the 32 mpg EPA claim, largely credited to the tall 7th and 8th gear tall ratios in the ZF automatic transmission. The engine operates on 91-octane premium unleaded fuel as the recommended minimum, though 93-octane unlocks optimal ignition timing and maximum rated power.
Body Styles, Trim Packages, and Factory Enhancements
BMW structured the 4 Series lineup to cater to different daily driving and lifestyle requirements, offering the 440i in three distinct body variants:
- F32 Coupe: Classic two-door design offering the lowest curb weight, stiffest torsional chassis dynamics, and optional manual transmission.
- F36 Gran Coupe: A four-door fastback body style featuring a wider rear hatch opening and additional rear legroom, delivering five-door utility while keeping a low coupe silhouette.
- F33 Convertible: Features a three-piece retractable hardtop that opens or closes in approximately 20 seconds at speeds up to 11 mph. Additional structural bracing adds around 500 lbs compared to the coupe.
- Factory Option Packages
- M Sport Package
- Aerodynamic kit
- M Sport steering wheel
- Shadowline trim
- 18" or 19" M wheels
- Track Handling Package
- M Sport Brakes (4-piston)
- Adaptive M Suspension
- Variable Sport Steering
- Non-runflat summer tires
- MPPSK
- Engine tune (355 HP)
- Valved exhaust
- 369 lb-ft torque
- Factory warranty safe
- M Sport Package
M Sport Package
The optional M Sport Package was one of the most popular configurations selected by original buyers. It modified both aesthetics and performance hardware:
- Aggressive M aerodynamic front apron, side skirts, and rear diffuser.
- Thicker M leather-wrapped steering wheel and sport seats with adjustable side bolsters.
- Standard 18-inch or optional 19-inch M double-spoke alloy wheels (Style 442M or 704M).
- Shadowline exterior window trim replacing polished chrome accents.
- Firmer M Sport suspension tuning (lowers ride height by 10mm on RWD models).
Track Handling Package
Engineered for buyers seeking sharper dynamic control, the Track Handling Package added genuine performance hardware directly to the chassis:
- M Sport Brakes: Larger ventilated brake discs with blue-painted four-piston front and two-piston rear fixed calipers.
- Adaptive M Suspension: Electronically controlled dampers that automatically adjust stiffness according to selected driving modes (Comfort, Sport, Sport+).
- Variable Sport Steering: Mechanically adjusts the steering gear ratio based on turn angles, lessening steering input required during tight cornering or parking maneuvers.
- High-Performance Tires: Replaced standard run-flat tires with Michelin Pilot Super Sport non-run-flat summer tires mounted on light-alloy wheels.
M Performance Power and Sound Kit (MPPSK)
For buyers desiring factory-backed output gains, BMW offered the optional M Performance Power and Sound Kit (MPPSK) through its official accessories catalog.
This option reflashed the engine management unit and installed a full stainless-steel valved cat-back M Performance exhaust system. The kit elevated engine output significantly:
- Horsepower: Boosted from 320 hp to 355 hp (+35 hp).
- Torque (Automatic): Boosted from 330 lb-ft to 369 lb-ft (+39 lb-ft).
- Torque (Manual): Capped at 355 lb-ft to preserve clutch integrity.
The MPPSK included a driver-selectable exhaust valve: in Comfort mode, exhaust gases pass through the muffler for quiet commuting; in Sport/Sport+ modes, the valves bypass the main muffler, producing a deeper, throaty exhaust note with pronounced overrun burbles during lift-off.
Interior Technology, Comfort, and Features
Inside the cabin, the 2017 BMW 440i blended ergonomic luxury with driver-centric cabin features. Mid-year production runs for 2017 saw the transition from BMW's iDrive 5.0 to iDrive 6.0, featuring a revised live-tile interface layout.
| Feature | 2017 BMW 440i Cabin Tech |
|---|---|
| Central Display | 8.8-inch High-Resolution Screen |
| Interface | iDrive 5.0 / 6.0 Live-Tile Layout |
| Connectivity | Apple CarPlay (Wireless), Bluetooth, USB |
| Audio System | 16-Speaker Harman Kardon Surround (600W) |
| Climate Control | Dual-Zone Automatic Climate Management |
| Seating | 10-Way Power Front Sport Seats w/ Memory |
Key interior highlights include:
- Infotainment Interface: Standard 8.8-inch high-resolution central display controlled via the iDrive rotary touchpad wheel. Available Navigation System Professional included real-time traffic updates and over-the-air map updates.
- Smartphone Integration: 2017 marked the initial rollout of optional wireless Apple CarPlay support for BMW vehicles.
- Audio Options: A premium Harman Kardon Surround Sound System was included standard or available via executive packages, driving 16 speakers via a 600-watt digital amplifier.
- Upholstery & Trimming: SensaTec synthetic leather came standard, with Dakota real leather offered in multiple colors (Coral Red, Cognac, Black, Oyster, and Venetian Beige). Finishes included brushed aluminum, ash grain wood, or carbon-look trim highlights.
Maintenance and Reliability Considerations
The B58 engine found in the 2017 BMW 440i has earned a strong reputation among automotive technicians for robust engineering and long-term durability, especially when compared to earlier N54 and N55 inline-six engines. However, as these vehicles age, routine maintenance and specific platform items require attention.
Strengths of the B58 Engine
- Sturdy Bottom End: Closed-deck design and forged steel crankshaft, connecting rods, and pistons handle heat and high cylinder pressures comfortably.
- Mechanical Water Pump: Unlike the high-failure electric water pumps on the previous N55 engine, the B58 uses a belt-driven mechanical main water pump (supplemented by a small auxiliary electric pump for turbo cooling), drastically improving cooling system longevity.
Known Inspection Points
- Coolant Loss: Early generation B58 engines (2016–2017) can slowly lose engine coolant over time. This is often traced to system cap venting, small leaks at the turbocharger coolant lines, or early micro-cracks in the oil filter housing module.
- Oil Filter Housing Module (OFHM): Made from composite plastic, the oil filter housing module mounted to the engine block can degrade over time due to thermal cycling, causing coolant and oil oil-seep leaks around 80,000–100,000 miles.
- PCV Valve Diaphragm: The Positive Crankcase Ventilation (PCV) valve is integrated directly into the plastic valve cover valve assembly. If the rubber diaphragm ruptures, it can cause high-pitched squealing noises under the hood, rough idling, and smoke from the exhaust.
- Valve Cover Gasket (VCG): Like most modern German engines, the valve cover gasket hardens over time, potentially leading to oil leaks onto the exhaust manifold after extended mileage.
Frequently Asked Questions
What is the main difference between the 2016 BMW 435i and the 2017 BMW 440i?
The primary difference is the engine. The 2016 435i used the N55 engine (300 hp / 300 lb-ft), while the 2017 440i debuted the B58 engine (320 hp / 330 lb-ft). The B58 features a closed-deck block design, air-to-water intercooling, upgraded turbocharging, and revised suspension tuning alongside updated iDrive software.
Is the 2017 BMW 440i fast?
Yes, the 2017 440i offers strong performance. The xDrive Coupe model accelerates from 0 to 60 mph in 4.6 seconds factory-rated (often 4.4 seconds in real-world testing), completing a quarter-mile sprint in approximately 13.1 seconds.
Does the 2017 440i come with a manual transmission?
Yes, a 6-speed manual transmission was available as a standard option on the rear-wheel drive 2017 440i Coupe in North America and select international markets. However, all Gran Coupe and Convertible variants came equipped exclusively with the 8-speed automatic.
What is the MPPSK package for the 2017 BMW 440i?
The M Performance Power and Sound Kit (MPPSK) was an official BMW factory performance package. It updated the engine calibration software and installed a valved M Performance exhaust system, raising horsepower from 320 hp to 355 hp and torque to 369 lb-ft on automatic models while preserving factory vehicle warranty coverage.
What fuel should be used in the 2017 BMW 440i?
BMW specifies premium unleaded fuel with a minimum octane rating of 91 AKI. For optimal engine performance, throttle response, and fuel efficiency, 93 octane gas is recommended.
Final Recommendation
The 2017 BMW 440i remains a standout option within the pre-owned modern sport luxury market. By pairing the robust B58 inline-six engine with flexible body choices—ranging from the sharp two-door Coupe to the ultra-practical four-door Gran Coupe hatchback—it strikes an ideal balance between everyday comfort and genuine driver engagement.
When shopping for a used 2017 model, look for vehicles equipped with the M Sport Package or Track Handling Package to gain upgraded suspension tuning, sportier exterior styling, and superior braking power. Prioritize examples with complete oil service documentation, inspect the plastic oil filter housing module for early leaks, and verify that all factory cooling system updates have been maintained.
