Parkers overall rating: 4.3 out of 5 4.3

Miles per pound (mpp) Miles per pound (mpp)

Petrol engines 3.4 - 5.8 mpp
Diesel engines 5.9 - 8.1 mpp
Plug-in hybrid petrol engines 13.1 - 25.4 mpp
Low figures relate to the least economical version; high to the most economical. Based on WLTP combined fuel economy for versions of this car made since September 2017 only, and typical current fuel or electricity costs.
Based on "Weighted" mpg; figures depend on the proportion of miles driven in pure electric mode and may vary widely

Fuel economy

Petrol engines 20.9 - 35.8 mpg
Diesel engines 37.7 - 51.4 mpg
Plug-in hybrid petrol engines 80.7 - 156.9 mpg
  • Plug-in hybrid 745e leads 7 Series efficiency
  • Diesel 730d will prove better on longer commutes
  • Service Inclusive package keeps maintenance costs down

Clearly, if you have the necessary resources to buy one of these cars brand new, then BMW 7 Series running costs are likely to drift into insignificance.

That said, clearly the diesel models – or the plug-in hybrid, depending on your usage – are likely to offer the lowest daily running costs.

The 730d is claimed to return up to 41.5-44.1mpg, and is likely to prove the more efficient for regular motorway use and longer journeys.

Where the plug-in hybrid 745e excels is for drivers who are predominantly city-based and can maximise the potential 36 miles of electric-only range. BMW claims an average of 123-141mpg under the official tests.

That’s in part down to the clever hybrid system and its intelligent energy management – this uses the car’s GPS to work out when to use petrol and electric power most efficiently along the route.

The one to avoid? Unsurprisingly it’s the V12-engined M760Li flagship with an official claim of 20.8-21.6mpg.

And all come with BMW’s Service Inclusive package, which covers the car’s general maintenance and basic consumables for the first five years or 50,000 miles.

If driving the cleanest BMW 7 Series is important to you then hunt out the plug-in hybrid 745e for the lowest CO2 emissions. So low, in fact, that it’s officially rated at 48g/km.

Diesels remain a more popular choice, though, with the leading 730d emitting a respectable 138g/km of CO2.

These startlingly good figures are achieved through the car’s use of Carbon Core technology for the structure, which lowers the weight by around 130kg over a similarly specified example of its predecessor, and range of Efficient Dynamics technologies. ECO Pro mode is standard on the 7 Series, as is brake energy regeneration, start/stop and electric power steering.

Also employed is an Active Airstream kidney grille, which alters the amount of airflow into the engine bay, and along with the vents for the front brakes lowers the CO2 emissions of the car by 3g/km alone.

The worst offender in the range? It won’t come as a surprise: with its 6.6-litre twin-turbo V12 petrol engine, CO2 output is an eye-watering 282g/km.

  • Lots of fresh tech, but BMW’s reputation is strong
  • Plenty of bespoke-feeling elements in the cabin
  • Feels exceptionally well-built, so should last well

Don’t be suspicious of the viability of all of the on-board technology here, because we still expect BMW 7 Series reliability to be exemplary.

Certainly, like any other car, it’s been tested to beyond its limits to ensure that every component and new element of technology will work perfectly for many years.

Most engines have seen service in other BMW models, and have proved reliable there – so we’d expect a similar performance in the new 7 Series, while the V12 and plug-in hybrid options are have been created following years of painstaking development.

Of course the new cabin has a more bespoke, hand-finished feel than any previous model, but despite these fine materials, it all looks to be solidly constructed and hard-wearing.

According to the vehicle inspectorate VOSA, there has been one recall so far for this-generation 7 Series, relating to a possible airbag issue.

Ongoing running costs

Road tax (12 months) £0 - £600
See tax rates for all versions
Insurance group 44 - 50
How much is it to insure?