BMW 7 Series hybrid range, MPG, CO2 & charging
|Economy||CO2||Electric range||Wallbox charge time|
|123-141mpg (e); 105-118mpg (Le)||46-52g/km (e); 54-62g/km (Le)||32-36 miles||Under two hours|
As a plug-in hybrid, the BMW 745e boasts an official fuel-economy figure well into triple figures. However, getting anywhere near the claimed 122.8mpg in the real world will depend on you plugging the car in regularly to maximise its electric running.
BMW 7 Series hybrid range, MPG & CO2 emissions
Featuring a 12kWh battery, the BMW 7 Series hybrid returns somewhere between 32 and 36 miles of electric range, according to official tests. In the real-world we saw this drop to around 25 miles, although those driving fewer motorway miles will likely achieve more than we did. This compares favourably to the Mercedes S-Class hybrid, which has a bigger battery but less range to show for it.
Provided that you can charge the 745e at home, the electric range should be enough for most people to cover short commutes or trips to the shops without touching the petrol in the fuel tank.
After the battery has depleted, however, you’ll be relying on the 3.0-litre engine while performance is very good, its six cylinders are thirsty. If you can’t keep the battery topped up, the 7 Series’ non-hybrid siblings – lighter owing to the lack of a battery – are likely to be better choices in the long run.
Another perk of the plug-in hybrid system is low CO2 emissions: official tests rate the 7 Series hybrid’s emissions at between 46 and 62g/km, which gives free access to the London Congestion Charge zone until the current rules are revised in October 2021.
Compared to the much bigger batteries you’ll find in pure-electric cars, the 12kWh unit found in the 7 Series is far smaller. This means it can be charged relatively quickly, with a 7kW home wallbox supply capable of delivering a full top-up in under two hours.
From a slower, 2.3kW supply typically provided by domestic, three-pin sockets, you’re looking at just over five hours for a full charge; easily achievable if you plug in the moment you get home, or if you leave the car charging overnight.