The BMW 3 Series Touring (F31 LCI), specifically the 340i variant with the Steptronic automatic transmission, represents a compelling blend of performance and practicality within the premium compact executive estate car segment. Produced from 2015 to 2019 as part of the F31 Life Cycle Impulse (LCI) facelift, this model aimed to enhance the already successful 3 Series Touring by offering a more potent engine option coupled with the convenience of an eight-speed automatic gearbox. It sat towards the top of the 3 Series Touring range, positioned as a performance-oriented alternative to the more fuel-efficient four-cylinder models and a more accessible entry point into the high-performance world of BMW’s M cars.
Technical Specifications
| Brand | BMW |
| Model | 3 Series |
| Generation | 3 Series Touring (F31 LCI, Facelift 2015) |
| Type (Engine) | 340i (326 Hp) Steptronic |
| Start of production | 2015 |
| End of production | 2019 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 9.3-9.0 l/100 km (25.3 – 26.1 US mpg) |
| Fuel consumption (extra urban) | 5.7-5.5 l/100 km (41.3 – 42.8 US mpg) |
| Fuel consumption (combined) | 7.0-6.8 l/100 km (33.6 – 34.6 US mpg) |
| CO2 emissions | 164-158 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.1 sec |
| Acceleration 0 – 62 mph | 5.1 sec |
| Acceleration 0 – 60 mph | 4.8 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 5 kg/Hp |
| Weight-to-torque ratio | 3.6 kg/Nm |
| Power | 326 Hp @ 5500-6500 rpm |
| Torque | 450 Nm @ 1380-5000 rpm (331.9 lb.-ft. @ 1380-5000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | B58B30A |
| Engine displacement | 2998 cm3 (182.95 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 82 mm (3.23 in.) |
| Piston Stroke | 94.6 mm (3.72 in.) |
| Compression ratio | 11:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-power turbo, Intercooler |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Coolant | 7.8 l (8.24 US qt | 6.86 UK qt) |
| Kerb Weight | 1615 kg (3560.47 lbs.) |
| Max. weight | 2175 kg (4795.05 lbs.) |
| Max load | 560 kg (1234.59 lbs.) |
| Trunk (boot) space – minimum | 495 l (17.48 cu. ft.) |
| Trunk (boot) space – maximum | 1500 l (52.97 cu. ft.) |
| Fuel tank capacity | 60 l (15.85 US gal | 13.2 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load with brakes (12%) | 1800 kg (3968.32 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 75 kg (165.35 lbs.) |
| Length | 4633 mm (182.4 in.) |
| Width | 1811 mm (71.3 in.) |
| Height | 1429 mm (56.26 in.) |
| Wheelbase | 2810 mm (110.63 in.) |
| Front track | 1531 mm (60.28 in.) |
| Rear (Back) track | 1572 mm (61.89 in.) |
| Ride height (ground clearance) | 140 mm (5.51 in.) |
| Drag coefficient (Cd) | 0.32 |
| Minimum turning circle (turning diameter) | 11.3 m (37.07 ft.) |
| Drivetrain Architecture | Rear wheel drive |
| Number of gears and type of gearbox | 8 gears, automatic transmission Steptronic |
| Front suspension | Independent coil spring |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 225/50 R17 98W |
| Wheel rims size | 7.5J x 17 |
Powertrain & Engine Architecture
At the heart of the 340i Touring lies the B58B30A 3.0-liter inline-six engine. This engine is a member of BMW’s modular engine family, known for its smooth power delivery and sophisticated technology. The B58 features a single twin-scroll turbocharger, direct fuel injection, and Double-VANOS variable valve timing for both intake and exhaust camshafts. This combination results in a broad torque curve peaking at 450 Nm (331.9 lb-ft) available from 1380 to 5000 rpm, and a maximum power output of 326 hp at 5500-6500 rpm. The engine’s layout, being longitudinal, contributes to balanced weight distribution. The Steptronic eight-speed automatic transmission is a torque-converter type, offering smooth and quick shifts. It features adaptive shift programs that adjust to the driver’s style and road conditions. Manual shift capability is also provided via steering wheel-mounted paddles.
Driving Characteristics
The 340i Touring Automatic delivers a noticeably more engaging driving experience than the lower-powered 3 Series variants. The readily available torque from the B58 engine provides strong acceleration in everyday driving situations, and the eight-speed transmission keeps the engine within its optimal power band. While not as raw or focused as the M3, the 340i offers a compelling balance between performance and comfort. The automatic transmission, while efficient, can sometimes feel slightly hesitant during aggressive downshifts compared to a dual-clutch transmission. The rear-wheel-drive configuration contributes to a balanced chassis, providing good handling and steering feel. Compared to the six-speed manual transmission available on some 340i models, the Steptronic offers greater convenience, particularly in urban traffic, but sacrifices some driver involvement.
Equipment & Trim Levels
The 340i Touring typically came well-equipped as standard. Common features included leather upholstery, power-adjustable front seats with memory function, a premium sound system, automatic climate control, and BMW’s iDrive infotainment system with a central display screen. Optional extras included a head-up display, adaptive cruise control, a panoramic sunroof, and various interior trim options. The Sport Line package added exterior styling enhancements and sport seats, while the Luxury Line focused on a more refined interior aesthetic. M Sport packages were also available, offering more aggressive styling cues, a sport-tuned suspension, and larger alloy wheels.
Chassis & Braking
The F31 3 Series Touring utilizes a MacPherson strut front suspension and a multi-link rear suspension. The 340i variant often featured stiffer springs and dampers compared to the lower-powered models, contributing to improved handling. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power. ABS (Anti-lock Braking System) and electronic stability control are standard safety features. The steering system is an electric power-assisted rack and pinion setup, offering precise and responsive steering feel.
Market Reception & Comparison
The 340i Touring was generally well-received by automotive critics, who praised its powerful engine, refined ride quality, and practical estate car body style. It was often seen as a sweet spot in the 3 Series lineup, offering a significant performance upgrade over the four-cylinder models without the higher price tag of the M3. Fuel economy was respectable for a performance car of this type, averaging around 33.6-34.6 US mpg in combined driving. Compared to the 320i and 330i Touring models, the 340i offered a substantial performance advantage, but at the cost of slightly higher fuel consumption and a higher purchase price. The 340i also provided a more luxurious and refined experience than the diesel-powered 330d Touring.
Legacy
The B58 engine has proven to be a robust and reliable powerplant, and the 340i Touring has maintained a strong following in the used car market. While some early examples may require attention to cooling system components, the B58 is generally considered to be a durable engine. The combination of performance, practicality, and relative reliability makes the F31 340i Touring a desirable option for buyers seeking a premium compact executive estate car. Its continued popularity is a testament to BMW’s engineering prowess and the enduring appeal of the 3 Series platform.
