In-depth Reviews

BMW X5 xDrive45e hybrid SUV

"A 50-mile electric range makes the BMW X5 xDrive45e an impressive plug-in hybrid"

Carbuyer Rating

3.8 out of 5

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  • 50-mile electric range
  • Clever hybrid mode
  • Interior quality


  • Reduced boot space
  • Plug-in tech adds weight
  • Unproven reliability

While the previous BMW X5 plug-in hybrid was a niche choice, the German manufacturer is hoping the all-new xDrive45e will form a key part of the X5 range, accounting for a good proportion of sales. A price of around £60,000 helps - that's not much more than a six-cylinder diesel model - but it's the low running costs that will help cement the deal for business and private buyers alike.

Using a battery pack with a large 24kWh capacity, the xDrive45e can manage around 50 miles on a single charge, easily tackling the commute of an average driver. Not only that, but in hybrid mode its computer will intelligently work out how best to juggle its petrol and electric motors for your route, using navigation data to assess the sort of roads you'll be driving on. The switch between electric and petrol is so smooth as to be virtually unnoticeable, and the combined maximum power of the electric motor and six-cylinder petrol is a considerable 389bhp, resulting in 0-62mph in 5.6 seconds. That's not bad for a 2.5-tonne SUV that claims to be capable of up to 235mpg with 39-41g/km of CO2 emissions. Business drivers will also appreciate its much lower Benefit-in-Kind (BiK) rating.

Despite the added weight of all the hybrid tech, the xDrive45e is as good to drive as a regular X5 with impressive handling for a car of this size. It boasts one of the best interiors on the market, with loads of kit and two 12.3-inch digital displays provide useful information and comprehensive entertainment - although Android Auto compatibility is notable by its absence. The battery pack does have one negative; it cuts the boot's luggage capacity by 150 litres. Luckily the X5's cargo space is large enough to begin with that this shouldn't cause too much of a headache.

MPG, running costs & CO2

A large battery pack gives the xDrive45e an impressive pure-electric range

The most important news for the latest BMW X5 plug-in hybrid is the sheer size of its battery pack. With a capacity of 24kWh, it equals the size of the battery fitted in the original Nissan Leaf and gives BMW's SUV a range of up to 54 miles at speeds of up to 83mph. It remains to be seen how realistic this is the real world, though - we managed around 25 miles using only electric power during our test drive.

For now, those figures are superior to the hybrid versions of the Audi Q7 and Volvo XC90, badge TFSI e and T8 Twin Engine respectively, and should be sufficient to cover the daily trips of many drivers. However, the Mercedes GLE 350de looks set to go even further, with a 31.2kWh battery and claimed 61-mile range.

There's more good news because while some PHEVs have been eye-wateringly expensive, the X5 xDrive45e is priced quite competitively. In fact, it slots into the model range just above the xDrive30d diesel and shouldn't be out of reach for a good number of prospective X5 buyers. Of course, there are also significant cost savings after you drive off the forecourt. Thanks to its low 39-41g/km CO2 emissions, the plug-in hybrid sits in the lowest BiK band, compared with the 30d diesel that sits in the highest band, and its official fuel-economy figure is 189-235mpg depending on specification. This last number is, of course, dependent on how often you use the petrol engine.

Once the car’s battery was depleted, we were only able to achieve around 28mpg when running purely off the petrol engine. On the move, the car harvests the energy normally lost when coasting and braking to top up the battery, which allows for a small amount of electric running at low speeds and when parking without plugging in.

Perhaps the weakest link is the fact the xDrive45e lacks any fast-charging capabilities, and topping the battery up using its 3.7kWh charger takes a sluggish seven hours. The idea is that you charge up the batteries overnight on your driveway or in the garage, but it would be nice to have the option of quicker charging in other scenarios.

Engines, drive & performance

Electric and six-cylinder petrol power combined helps disguise the plug-in hybrid's weight

One disadvantage of a plug-in hybrid is the added weight of its battery pack and electric motor, and the X5 xDrive45e ends up tipping the scales at over 2.5 tonnes. At least the electric motor wins back some points by offering instant acceleration, helping the X5 feel a bit lighter on its feet. It's certainly no slouch, with a combined 389bhp getting the X5 from 0-62mph in an impressive 5.6 seconds.

By default the X5 plug-in is in its hybrid mode, allowing you to get underway silently, with the six-cylinder petrol engine only springing to life if you push the accelerator harder. BMW has worked hard on making the way power is juggled between the electric motor and petrol engine as intelligent as possible, and it uses the sat-nav to help decide; using battery power in a village or city centre and switching to the petrol on the motorway. The transitions between them are very unobtrusive, helped by the smooth six-cylinder engine. While it can be handy to 'lock' the car in EV mode in city centres, we reckon most drivers will be content to simply leave Hybrid mode active.

There's also a battery saving mode, but interestingly you can cap the amount of power the battery can use at the start of a journey, if for example, you want the same amount of zero emissions driving on the way home.

Interior & comfort

Top-notch materials and technology should satisfy buyers

The BMW X5 has one of the best all-round interiors in its class, with excellent materials and build quality, along with lots of technology to keep its occupants connected, entertained and heading in the right direction.

Twin 12.3-inch screens (one behind the steering wheel and another in the middle of the dashboard) rely on BMW's ever-improving iDrive infotainment system which boasts crisp graphics. This is one of the best interfaces in the business; it’s powerful, logical and supports gesture and voice control, as well as offering more traditional controls.

BMW’s Connected Package Professional is standard, adding an array of remote services and functions including a 24-hour concierge service all operated via the BMW ConnectedDrive smartphone app. It also adds wireless Apple CarPlay but lacks Android Auto compatibility, which won’t become available on BMW’s cars until later in 2020.

Essentially a trim level in its own right, the xDrive45e is based on the standard xLine model, and you get 19-inch alloy wheels, a five-meter charging cable and eDrive driving modes. There are also standard features like LED exterior lighting, air suspension, parking aids, leather upholstery and a power tailgate.

Practicality & boot space

The battery pack reduces boot space but the xDrive45e is still practical

Fitting such a large battery pack does have some consequences, reducing boot space by 150 litres. Fortunately the X5 is a large car, so the remaining volume should satisfy the majority of families.

Passenger space is pretty good too, with ample room for adults in the back seats, helped by the lack of a large transmission tunnel. Headroom in the front and rear is good, but the large battery pack means there's no option to add a third row of seats in the boot of the plug-in hybrid X5.

Reliability & safety

A strong safety score but recent BMW owners report some reliability concerns

BMW reliability scored poorly in our 2019 Driver Power survey, so the fact the BMW X5 xDrive45e is so complex could be a worry. A glass-half-full way of looking at the electric battery and motor, however, is that they should take some strain off the combustion engine and brakes under acceleration and deceleration, improving the life of quite a few components in the process.

Euro NCAP awarded the BMW X5 a top five-star score following extensive crash-testing. Just about every modern active and passive safety system is on board, from autonomous emergency braking to an evasion aid that can help you steer to try and avoid a collision.

Price, value for money & options


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