Vehicle Overview
Key specifications and features at a glance
Detailed Specifications
Complete technical specifications comparison
Best comparable values are highlighted in green.
| Specification | 3 Series M340i xDrive | E-Class E 300 |
|---|---|---|
| Engine Capacity | 2998 | 1999 |
| Engine Code | B58B30 | M254 |
| Cylinder Configuration | Inline | Inline |
| Number of Cylinders | 6 | 4 |
| Aspiration | Turbocharged | Turbocharged |
| Power | 285 | 190 |
| Torque | 500 | 400 |
| Top Speed | 250 | 250 |
| Drive Type | AWD | RWD |
| Fuel Economy City | 10.4 | — |
| Fuel Economy Highway | 6.3 | — |
| Fuel Economy Combined | 8 | 7.2 |
| Emission Standard | — | Euro 6 |
| Tyre Size | 225 / 40 R19 front;255 / 35 R19 rear | 245 / 40 R20 front, 275 / 35 R20 rear |
| Wheel Size | 19 | 20 |
| Number of Doors | 4 | 4 |
| Seating Capacity | 5 | 5 |
| Front Brakes | Ventilated disc | Ventilated discs |
| Rear Brakes | Ventilated disc | Ventilated discs |
| Front Suspension | Double-joint spring strut | Four-link independent |
| Rear Suspension | Five-link | Multi-link independent |
| Steering Type | Electric rack and pinion | Electric power steering |
| Number of Airbags | 8 | 9 |
| Towing Capacity | 1800 | 2100 |
| Turning Circle | 12 | 11.6 |
Dimensions & Weight
Physical specifications and measurements
Best comparable values are highlighted in green.
| Dimension | 3 Series M340i xDrive | E-Class E 300 |
|---|---|---|
| Fuel Tank Capacity | 59 | 66 |
| Length | 4713 | 4955 |
| Width | 1827 | 1880 |
| Height | 1440 | 1466 |
| Wheelbase | 2851 | 2961 |
| Ground Clearance | 136 | 146 |
| Kerb Weight | 1745 | 1865 |
| Boot Space | 480 | 540 |
Features Comparison
Standard and optional equipment comparison
Safety
| Feature | 3 Series M340i xDrive | E-Class E 300 |
|---|---|---|
| Adaptive Cruise Control | ||
| Autonomous Emergency Braking | ||
| Lane Departure Warning | ||
| Lane Keep Assist | ||
| Blind Spot Monitoring | ||
| Rear Cross Traffic Alert | ||
| Traffic Sign Recognition | ||
| Driver Attention Monitor | ||
| Front Parking Sensors | ||
| Rear Parking Sensors | ||
| 360 Camera | ||
| Reverse Camera | ||
| Hill Start Assist | ||
| Tyre Pressure Monitoring System | ||
| Rear Occupant Alert |
Comfort
| Feature | 3 Series M340i xDrive | E-Class E 300 |
|---|---|---|
| Keyless Entry | ||
| NFC Keyless Entry | ||
| Push Button Start | ||
| Dual-Zone Climate Control | ||
| Tri-Zone Climate Control | ||
| Heated Front Seats | ||
| Ventilated Front Seats | ||
| Heated Steering Wheel | ||
| Power Tailgate | ||
| Remote Start | ||
| Power Driver Seat | ||
| Power Passenger Seat | ||
| Memory Seats | ||
| Auto Dimming Mirror | ||
| Rain Sensing Wipers | ||
| Adaptive Headlights |
Interior Exterior
| Feature | 3 Series M340i xDrive | E-Class E 300 |
|---|---|---|
| Leather Seats | ||
| Fabric Seats | ||
| Ambient Lighting | ||
| Sunroof | ||
| Panoramic Roof | ||
| LED Headlights | ||
| Matrix LED Headlights | ||
| Daytime Running Lights | ||
| Alloy Wheels | ||
| Roof Rails | ||
| Rear Privacy Glass | ||
| Power Folding Mirrors |
Technology
| Feature | 3 Series M340i xDrive | E-Class E 300 |
|---|---|---|
| Touchscreen Display | ||
| Digital Instrument Cluster | ||
| Apple CarPlay | ||
| Android Auto | ||
| Wireless Apple CarPlay | ||
| Wireless Android Auto | ||
| Wireless Phone Charging | ||
| Built-in Navigation | ||
| Premium Audio System | ||
| Head-Up Display | ||
| USB-C Ports | ||
| Bluetooth Connectivity | ||
| Voice Control | ||
| Connected Car App |
Pros & Cons
Strengths and weaknesses of each vehicle
BMW 3 Series M340i xDrive
Pros
- +Powerful six-cylinder performance
- +Confident xDrive traction
- +Rapid all-weather acceleration
- +Practical 480-litre boot
- +Comfortable long-distance cruiser
Cons
- −Substantially higher price
- −Higher fuel consumption
- −Expensive performance tyres
- −Firm ride on 19-inch wheels
- −Costly insurance and servicing
Mercedes-Benz E-Class E 300
Pros
- +Refined long-distance comfort
- +Strong 190 kW performance
- +Large 540-litre boot
- +Premium digital cabin
- +Rear-wheel-drive balance
Cons
- −High Australian purchase price
- −Costly scheduled servicing
- −Large wheels can ride firmly
- −Sedan body limits cargo flexibility
- −Options can be expensive
Which one should you buy?
Best for Performance: BMW 3 Series M340i xDrive
System power around 285 kW supports a solid performance score.
Best for Value: BMW 3 Series M340i xDrive
Boot space relative to list price contributes positively to the value score.
Best for Practicality / Space: Mercedes-Benz E-Class E 300
Boot and practicality-related dimensions score well for everyday use.
Best Overall: BMW 3 Series M340i xDrive
Across performance, value, efficiency, and practicality, this variant shows a balanced overall profile.
Our Recommendation
Choose BMW 3 Series M340i xDrive if: You prioritise performance and responsive power.
Choose Mercedes-Benz E-Class E 300 if: Space, seating, and everyday practicality come first.
Bottom Line: BMW 3 Series M340i xDrive leads on performance, BMW 3 Series M340i xDrive leads on value and Mercedes-Benz E-Class E 300 leads on practicality.
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