The Comparative Analysis :

BMW 518d Steptronic (14 - 16) vs. BMW M550i xDrive Steptronic (17 - 18)

€ 43,100
BMW 518d Steptronic (14 - 16) 518d
€ 86,300
BMW M550i xDrive Steptronic (17 - 18) M550i
€ 43,100
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 86,300

Base price of a new vehicle with standard equipment in Germany at market launch. Price Info

Vehicle Dimensions

The 518d is a little smaller in every dimension. It's 2.2 inches shorter, 0.3 inches narrower and 0.1 inches lower than the M550i.
518d
M550i
57.6
Blueprint BMW 518d Steptronic (14 - 16)
73.2
82.4
57.8
Blueprint BMW M550i xDrive Steptronic (17 - 18)
73.5
83.7
73.2 in
Width
73.5 in
82.4 in
Width Incl. Mirrors
83.7 in
57.6 in
Height
57.8 in
Blueprint BMW 518d Steptronic (14 - 16)
116.9
193.2
Blueprint BMW M550i xDrive Steptronic (17 - 18)
117.1
195.4
193.2 in
Length
195.4 in
116.9 in
Wheelbase
117.1 in

Vehicle Weight

518d
M550i
3748 lb
Curb Weight
4156 lb
4927 lb
Gross Vehicle
Weight
5423 lb
BMW 518d Steptronic (14 - 16)
Weight Difference:
408 lb
9.82 %
BMW M550i xDrive Steptronic (17 - 18)

General

518d
M550i
F10
Generation
G30
Sedan
Car Body Style
Sedan
Diesel
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Permanent all-wheel drive (AWD)
8-speed automatic transmission
Transmission
8-speed automatic transmission

Engine

518d
M550i
Straight-four diesel engine with tur­bo­charger
Engine Type
V8 gasoline engine with two tur­bo­chargers (bi­turbo)
BMW B47
Engine Series
BMW N63
B47-D20
Engine Code
N63-B44
4
Valves
4
4
Cylinders
8
2 L / 98 cu in
Displacement
4.4 L / 215 cu in
148 hp
at 4000 rpm
Power
456 hp
at 5500 rpm
518d
148 hp
456 hp
M550i
266 lb‑ft
at 1750 rpm
Max. Torque
479 lb‑ft
at 1800 rpm
518d
266 lb‑ft
479 lb‑ft
M550i

Performance

518d
M550i
134 mph
Maximum Speed
155 mph
9.4 sec
Acceleration 0 to 62 mph
4 sec
62 mph 62
mph

430 ft
0.000 sec

518d

62 mph 62
mph

184 ft
0.000 sec

M550i

 REPLAY
25.32 lb/hp
Weight-to-Power Ratio
9.11 lb/hp
518d
25.32 lb/hp
9.11 lb/hp
M550i

Fuel Economy / Emissions

518d
M550i
Fuel Economy
56 mpg
combined
26 mpg
518d
56 mpg
26 mpg
M550i
48 mpg
city
19 mpg
No data
highway
No data
Kraftstoffanzeige
18.5 gal
Fuel Tank Capacity
18 gal
Kraftstoffanzeige
1036 mi
Range
475 mi
518d
1036 mi
475 mi
M550i
Environmental Impact
86.4 kWh
Total Energy Consumption
per 100 miles ⓘThe total energy consumption per 100 miles is the amount of energy consumed by a vehicle when burning fuel or using electricity per 100 miles (final energy), and the energy required to produce the appropriate amount of fuel or electricity (primary energy).
168.7 kWh
518d
86.4 kWh
168.7 kWh
M550i
Euro 6b (NEFZ)
Emission Standard
Euro 6c (NEFZ)
177 g/mi (NEFZ)
CO2 Emissions
328 g/mi (NEFZ)

Practical Convenience

518d
M550i
4
Doors
4
5
No. of Seats
5
1179 lb
Maximum Payload
1268 lb
14.7 cu ft
Trunk Volume
15 cu ft
No data
Cargo Volume (Seats Down)
No data