BMW E70 X5 buying guide: engines, issues and what to check
The E70 X5 is a spacious and capable used SUV. This buying guide covers the petrol and diesel engines, xDrive, the third row, common issues such as the transfer case, suspension and electronics, and what to check.
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The E70 X5 is the second generation of BMW's large SUV, built from 2006 to 2013. It offers a spacious cabin, an optional third row of seats, xDrive all-wheel drive and strong engines, all at prices that have become very affordable on the used market.
But a large, complex SUV can also bring large repair bills. In this buying guide we explain the engines, xDrive, the most common issues and what to check before you buy an E70 X5.
Why the E70 X5 is popular
The E70 X5 combines several strengths:
- Space and comfort for families, with an optional third row of seats in some markets.
- xDrive all-wheel drive for traction in all weather.
- Strong engines, from smooth six-cylinders to powerful V8s.
- Towing capability for trailers, boats and caravans.
- Good driving dynamics for a large SUV.
It is also the base of the first X5 M. Our article on the X5 M and X6 M history explains that model.
Engines
The E70 X5 was offered with several engines, depending on the market and year:
- Six-cylinder petrol: early 3.0si and xDrive30i models used the naturally aspirated N52, while later xDrive35i models used the turbocharged N55. Our article on the BMW N52 engine explains the earlier six-cylinder.
- V8 petrol: the xDrive48i and later xDrive50i with a twin-turbo V8.
- Six-cylinder diesel: 3.0d and later xDrive30d, xDrive35d and xDrive40d with the M57 and later N57 diesel engines.
For many buyers, the six-cylinder diesel offers the best balance of performance and fuel economy. The twin-turbo V8 is powerful but has higher running costs and more known issues.
E70 X5 common issues
Points to check include:
- Transfer case actuator and transfer case: a common xDrive issue, causing warning messages or clunks when manoeuvring.
- Front suspension bushings and control arms, which wear on a heavy SUV. Our article on worn BMW suspension bushings explains the symptoms.
- Rear air suspension on cars with self-levelling, which can leak.
- Oil leaks from the oil filter housing and valve cover on petrol engines, and other areas on diesels. Our article on BMW oil leaks explains them.
- Diesel issues such as swirl flaps on some older diesel engines, EGR and DPF. Our articles on BMW swirl flaps and the BMW DPF explain these.
- Electrical faults, including the battery, door locks and comfort functions. Our article on BMW battery drain explains causes.
- Panoramic roof drains, which can block and cause water leaks. Our article on BMW water leaks explains how to check.
The V8 models
The xDrive50i uses a twin-turbo V8 that is very powerful but known for higher oil consumption, heat-related issues and expensive repairs on some engines. If you are considering a V8 model, look for complete service history and evidence of preventive work, and have a specialist inspect the car. Our article on BMW oil consumption explains what is normal.
xDrive and gearbox
The E70 uses a six-speed automatic gearbox in most versions, with xDrive all-wheel drive. Check:
- Smooth gear changes without jerks or delays.
- No clunks from the transfer case when turning at low speed.
- No warning messages about xDrive or the drivetrain.
Fluid changes for the gearbox and transfer case can help long-term reliability. Our article on BMW transmission fluid explains why.
Interior and equipment
The E70 was offered with many options, including comfort seats, a panoramic roof, Head-Up Display, a third row of seats, entertainment systems and soft-close doors. Test all functions, because repairs to electronic equipment can be expensive.
Check the iDrive system and screen, the climate control and the electric tailgate if fitted. Our article on BMW iDrive generations explains the systems used in this period.
Test drive checklist
On the test drive:
- Start the engine cold and listen for unusual noises.
- Check for smoke under acceleration. Our article on BMW exhaust smoke explains what colours mean.
- Drive slowly in tight circles to test the transfer case.
- Feel for vibration at motorway speeds and when braking.
- Check the ride height after the car has stood for some time if it has air suspension.
- Read the fault memory with a diagnostic tool.
Our complete checklist for buying a used BMW covers other checks.
Is the E70 X5 a good buy?
A well-maintained E70 X5, especially with a six-cylinder diesel or the N55 petrol engine, can be an excellent family SUV at a reasonable price. The key is complete service history and a careful inspection.
Budget for maintenance, because large SUVs have expensive tyres, brakes and suspension parts. Our guide to buying a high mileage BMW explains how to judge the condition of older cars.
BMW E70 X5 key facts
| Item | Details |
|---|---|
| Production | 2006 to 2013 |
| Body | Large SUV, optional third row |
| Petrol engines | Six-cylinder and twin-turbo V8 |
| Diesel engines | Six-cylinder M57 and later N57 |
| Gearbox | 6-speed automatic in most versions |
| Drive | xDrive all-wheel drive |
| Key checks | Transfer case, suspension, leaks, electronics |
Frequently asked questions
Is the E70 X5 reliable?
It can be, with good maintenance. Six-cylinder versions are generally more dependable than the twin-turbo V8.
Which E70 X5 engine is best?
Many buyers prefer the six-cylinder diesel or the N55 petrol for their balance of performance and reliability.
What is the transfer case problem on the E70 X5?
The transfer case actuator can fail, causing xDrive warnings and clunks when manoeuvring.
Does the E70 X5 have seven seats?
An optional third row was available in some markets.
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