In-depth reviews

BMW X5 SUV - MPG, running costs & CO2

Fuel-efficiency is good for an SUV of this type; the plug-in hybrid model is the most fuel efficient

Carbuyer Rating

3.8 out of 5

Owners Rating

4.0 out of 5

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MPG, running costs & CO2 Rating

3.5 out of 5

Across the X5 line-up, only the plug-in hybrid and entry-level 30d diesel engine can better 40mpg, which is somewhat disappointing. However, view its fuel-efficiency figures against the vast performance on offer, and the picture doesn't look so bad. BMW has also been able to find some efficiency improvements over the previous X5, despite the new model being longer, wider and taller.

BMW X5 MPG & CO2

After the plug-in hybrid model, the cheapest conventionally powered X5 to run is the xDrive30d, with a 3.0-litre diesel, which features mild-hybrid assistance and is capable of returning around 41.5mpg. Its CO2 emissions start at 179g/km, however, place it in the higher Benefit-in-Kind (BiK) band for company-car drivers. The Mercedes GLE 250d returns a similar mpg figure, but it's also quite a bit slower.

The mid-range xDrive40d also features mild-hybrid assistance and offers improved performance over the entry-level 30d model, with only a slight hit on fuel economy. It can officially manage up to 40.4mpg with CO2 emission starting from 184g/km depending on specification. The range topping M50d is the fastest diesel, while also edging out the petrol for economy. Its official figures are 32.8 to 34mpg with emissions of 217g/km upwards, so needless to say it's firmly in the most expensive BiK band for fleet drivers.

If you'd rather own an X5 with a petrol engine, it's probably worth opting for the xDrive45e plug-in hybrid, which can cover 54 miles on electric power, a distance that should cover most daily commutes. It also has the lowest emissions of the X5 range, too, claiming an official CO2 emissions figure of 27-31g/km.

There are two conventional petrol models: the xDrive40i, which in M Sport trim returns up to 31.4mpg with emissions starting from 205g/km, and the xDrive40i xLine model, which returns up to 31mpg and emissions starting from 209g/km, making both versions as expensive to run as a sports car.

The M50i is essentially a standalone model, featuring a thirsty twin-turbocharged V8 engine. Given that it’s the second most powerful engine offered in an X5, it's fuel economy numbers are fairly respectable: 24.9mpg and emissions of 263g/km upwards.

The flagship BMW X5 M is more on a par with a supercar, returning up to 21.1mpg if driven carefully, with CO2 emissions of 304g/km roughly three times that of a supermini.

Every conventional petrol and diesel BMW X5 is liable for the regular VED (road tax) each year, with the mild-hybrid and PHEV eligible for the discounted rate. Because the list price of every X5 exceeds £40,000, owners will also have to pay the additional surcharge amount in years two to six.

Insurance groups

The BMW X5's price, performance and advanced technology means it sits at the top end of the one to 50 scale. As a guide, the Mercedes GLE sits in groups 35 to 50. Even the X5 xDrive30d xLine is in group 45, while the BMW X5 M is in group 50.

Warranty

BMW offers a similar warranty to rivals, covering the X5 for the first three years. It's slightly more generous that you'll get with a Volkswagen Touareg or Audi Q7, though, because BMW doesn't cap mileage during this period.

Servicing

All BMW models are offered with the choice of fixed-price servicing plans that can be paid up front when you purchase the car, or spread over monthly instalments to make maintenance costs more manageable.

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