In terms of boot space, the BMW i7 has an edge with 500 liters of capacity. Regarding seating, the i7 can accommodate up to 5 occupants, while the Spectre has room for 4. The i7 also benefits from having 4 doors, compared to 2 in the Spectre. Both cars come equipped with Isofix mounting points for child safety seats. In conclusion, the BMW i7 offers more practicality with greater boot space and seating capacity.
Both vehicles have single-gear transmissions, but when it comes to performance, the Rolls-Royce Spectre has a higher maximum speed of 250 km/h compared to the range of 205-250 km/h provided by the i7, depending on the engine choice (eDrive50 Design Pure Excellence and M70 xDrive). Additionally, the Spectre has a more powerful engine, with 430 kW and 900 Nm compared to the i7's 335-485 kW and 650-1100 Nm, again dependent on the engine options. However, the i7 offers a faster acceleration time of 3.7-5.5 seconds in a 0-100 km/h sprint, with the Spectre trailing behind at 4.5 seconds. In conclusion, the Rolls-Royce Spectre boasts a higher top speed and power output, while the BMW i7 offers a broader range of engine choices and quicker acceleration.
The BMW i7 comes with a standard 245/50R19 tire size and produces 66 decibels of noise. While no data was available for the Rolls-Royce Spectre in this category, the i7's noise level is comparatively low for such a powerful vehicle. In conclusion, the BMW i7 is a quieter option with an appropriate tire size, providing a comfortable and refined ride.
The Rolls-Royce Spectre has a higher empty weight (2975 kg) compared to the range of 2595-2770 kg offered by the BMW i7, depending on the engine choice. In terms of permissible total weight, the i7 ranges from 3130 kg to 3250 kg, while no data was available for the Spectre. When it comes to towing capabilities, the i7 stands out with a braked trailer capacity of 2000 kg, an unbraked trailer capacity of 750 kg, and a maximum towbar load of 80 kg. In conclusion, the BMW i7 provides better towing capabilities, while the Rolls-Royce Spectre has a higher empty weight, making it feel more substantial and luxurious on the road.
Regarding electric vehicle capabilities, the BMW i7 offers a higher WLTP range of 560-623 km (based on engine options) compared to the Rolls-Royce Spectre's 520 km. However, the Spectre has larger total and usable battery capacities of 111.5 kWh and 105.2 kWh, respectively, compared to the i7's 105.7 kWh and 101.7 kWh. Both vehicles come equipped with lithium batteries, and the i7 features 3-phase AC charging while the Spectre boasts a considerably lighter battery weight of 700 kg. In conclusion, the BMW i7 provides a longer electric driving range, while the Rolls-Royce Spectre comes with a larger battery capacity and lighter battery weight.