VS
At a Glance
Power
400 kW
375 kW
Torque
745 Nm
750 Nm
Fuel
18.4-19.6 kWh/100km l/100km
2.1 when hybrid battery charged / 8.0-9.
Towing
2000 Kg
—
0-100 km/h
4.7 s
4.9 s
Engine
electric cc
2999 cc
Choosing between the BMW i7 and the Mercedes-Benz S-Class is one of the most common decisions South African car buyers face. The BMW i7 delivers 400 kW while the Mercedes-Benz S-Class produces 375 kW. On fuel, the i7 returns 18.4-19.6 kWh/100km l/100km while the S-Class uses 2.1 when hybrid battery charged / 8.0-9.0 when discharged l/100km — important in a market where fuel prices change monthly. Pricing starts at R3 028 000 for the i7 and R3 224 101 for the S-Class. Both vehicles have their merits. The right choice depends on your priorities: fuel economy, performance, towing ability, safety features or total cost of ownership. This comparison covers every specification available so you can make an informed decision.
Performance
Power Output
400 kW
375 kW
Torque
745 Nm
750 Nm
0-100 kph
4.7 s
4.9 s
Top Speed
240 Km/h
250 Km/h
Engine & Drivetrain
Engine Capacity
electric cc
2999 cc
Engine Layout
—
inline
Cylinders
—
6
Fuel Type
electric
petrol-electric hybrid
Forced Induction Device
—
turbocharger
Transmission
automatic
automatic
Number of Gears
—
9
Drive Wheels
all
all
Full Time 4x4
✓ Standard
✓ Standard
Fuel Economy
Fuel Consumption Average
18.4-19.6 kWh/100km l/100km
2.1 when hybrid battery charged / 8.0-9.
Fuel Tank Capacity
102 kWh l
67 l
CO2 Emissions
—
16-23 when hybrid battery charged / 181-
Dimensions
Length
5391 mm
5289 mm
Width
1950-2192 mm
1954-2109 mm
Height
1544 mm
1503 mm
Wheelbase
3215 mm
3216 mm
Ground Clearance
136 mm
—
Kerb Weight
2640 DIN / 2715 EU Kg
2375 DIN / 2450 EU Kg
Doors
4
4
Seats
5 (opt 4)
5 (opt 4)
Load Volume
500 l
350 l
Towing & Payload
Towing Capacity
2000 Kg
—
Load Capacity
610 l
620 l
Safety
ABS
✓ Standard
✓ Standard
EBD
✓ Standard
✓ Standard
Brake Assist
✓ Standard
✓ Standard
Stability Control
✓ Standard
✓ Standard
Traction Control
✓ Standard
✓ Standard
Airbag Count
6
7 (opt 9 / opt 11)
Driver Airbag
✓ Standard
✓ Standard
Passenger Airbag
✓ Standard
✓ Standard
Side Airbags Front
✓ Standard
✓ Standard
Curtain Airbags
✓ Standard
✓ Standard
Features & Tech
Air Conditioning
✓ Standard
✓ Standard
Climate Control
✓ Standard
✓ Standard
Cruise Control
✓ Standard
✓ Standard
Adaptive Cruise Control
✓ Standard
✓ Standard
Bluetooth
✓ Standard
✓ Standard
Satellite Navigation
✓ Standard
✓ Standard
Reversing Camera
✓ Standard
✓ Standard
Park Distance Rear
✓ Standard
✓ Standard
Park Distance Front
✓ Standard
✓ Standard
Sunroof
✓ Standard
✓ Standard
Heated Seats
✓ Standard
✓ Standard
Keyless Entry
✓ Standard
✓ Standard
Tow Bar
Optional
Optional
Alloy Wheels
✓ Standard
✓ Standard
Warranty & Service
Warranty Period
2 vehicle / 8 battery
2
Warranty Distance
unlimited vehicle / 100000 battery Km
unlimited Km
Service Intervals
service interval indicator
service interval indicator (max 20000)
The Verdict
Which Wins?
Overall Winner
BMW i7
3 / 4 categories
Performance
i7
Fuel Economy
Tied
Value
i7
Practicality
i7
Pros & Cons
BMW i7
More powerful engine (400 kW)
Lower starting price (R3 028 000)
Quicker 0-100 km/h (4.7 ss)
Few notable weaknesses
Mercedes-Benz S-Class
Well-rounded specification
Less power than rival (375 kW vs 400 kW)
Higher starting price
Frequently Asked Questions
Which is more fuel efficient, the i7 or S-Class?
The i7 uses 18.4-19.6 kWh/100km l/100km and the S-Class uses 2.1 when hybrid battery charged / 8.0-9.0 when discharged l/100km on the combined cycle. In South African conditions with a mix of highway and urban driving, real-world figures will be slightly higher.
Which has more power, the i7 or S-Class?
The i7 produces 400 kW and 745 Nm of torque while the S-Class delivers 375 kW and 750 Nm of torque. The i7 is the more powerful option.
What is the price difference between the i7 and S-Class?
The i7 starts from R3 028 000 and the S-Class from R3 224 101. The i7 is cheaper by R196 101 at this variant level. Final on-the-road pricing varies by dealer and specification.
Which has a higher towing capacity, the i7 or S-Class?
The i7 has a braked towing capacity of 2000 Kg and the S-Class can tow not specified. Always verify towing limits in the owner's manual before hitching a trailer.
Should I buy the i7 or the S-Class?
It depends on your priorities. If fuel economy matters most, check the L/100km figures above. If you need towing capacity, compare the towing ratings. For day-to-day South African driving - load shedding runs, potholed roads, school runs and highway commutes - consider ground clearance, service network coverage, and total cost of ownership including insurance and maintenance. Use the spec tables above to compare every detail before making your decision.