Skip advert
Advertisement

BMW X4 (2014-2018) review - MPG, CO2 and Running Costs

It’s not cheap to buy but the BMW X4’s diesel engines are surprisingly frugal

Overall Auto Express Rating

3.0 out of 5

MPG, CO2 and Running Costs Rating

3.9 out of 5

Find your BMW X4
Offers from our trusted partners on this car and its predecessors...
Or are you looking to sell your car?
Customers got an average £1000 more vs part exchange quotes
Advertisement

Only diesel X4s are available in the UK, which offer a good blend of power and economy. However, X4 buyers will struggle to justify the premium over the roomier X3, which uses the same engines.

Due to its very heavy circa-1,900kg kerb weight, the X4 could chew through brakes and tyres at an accelerated rate, but that’s unlikely to be a deal-breaker if you’re paying the extra for the X4’s sharper drive.

Advertisement - Article continues below

There’s no hybrid X4, so the most eco-friendly version will remain the cheapest to buy – the X4 20d. BMW claims it’ll achieve up to 54.3mpg when fitted with eight-speed automatic gearbox and emit a respectable 138g/km of CO2 – that’s almost 20g/km less than the next cleanest X4 in the range, the 30d. Go for the manual and the figures are slightly higher at 52.3mpg and 142g/km.

There’s virtually no difference between the 3.0-litre engines in terms of economy and emissions. The 30d returns 47.9mpg and emits 156g/km, while the 35d offers 47.1mpg and 157g/km.

The X4’s Driver Performance Control also has an EcoPro mode to reduce fuel consumption, with a useful icon on the gauge cluster to show how much fuel you’ve saved while in this setting.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

However, the X3 also has all this technology and despite the X4 having a slightly sleeker silhouette than its sister car, its economy figures are no better. The X3 is also cheaper to buy, more practical and there’s a cheaper and more economical X3 18d version. In any rational terms, the X4 is very difficult to justify given the X3 is one of the best mid-size SUVs to drive.

While claimed fuel economy is good for an SUV, and emissions will be appealing to company car buyers, another sticking point with the X4 is road tax. From April, cars costing more than £40,000 face annual road tax of £450 for their first five years on the road, instead of the regular £140. The X4 range starts at just over £37,500, and five of the eight models in the line-up break the £40k mark. If that's a road tax price that's too much to swallow, then the standard X3 will be worth considering instead, as all the 20d-powered models come in below £40k.

Insurance

An expensive and powerful car such as the X4 is never going to be cheap to insure. Groups start at 31 for the 20d, rise to 40 for the 30d and 43 for the 35d. Howeer, the Mercedes GLC Coupe and Range Rover Evoque are about on par with the BMW.

Depreciation

Cars with premium badges such as the BMW tend to hold their value better than those without – and the same goes for economical diesels. So the X4 stands to do well, at least when expressed as a percentage of the original value. It’s still an expensive car though, so expect it to shed more of its list price in terms of outright cash than cheaper rivals. 

Skip advert
Advertisement
Skip advert
Advertisement

Most Popular

Dacia’s Duster is Britain’s best car to own as Driver Power 2024 survey results land
Dacia Duster - front tracking
News

Dacia’s Duster is Britain’s best car to own as Driver Power 2024 survey results land

Owners have voted the Dacia Duster as the most satisfying new car to own in the 2024 Driver Power customer satisfaction survey
11 Jun 2024
Best cars to own: Driver Power 2024 results
Driver Power 2024 - best cars to own header
News

Best cars to own: Driver Power 2024 results

The best new cars to own in the UK right now according to the people who already do. It’s the 2024 Driver Power results!
11 Jun 2024
New Porsche 911 S/T 2024 review: one of the best sports cars ever built
Porsche 911 S/T - front
Road tests

New Porsche 911 S/T 2024 review: one of the best sports cars ever built

Porsche’s last hurrah for the 992.1 generation 911 is an epic driving machine with just the right dose of luxury
12 Jun 2024