BMW X5 E70 (2006–2013): A Guide to Reliability and Maintenance
Quick Summary
The BMW X5 E70 is the second generation of BMW’s SUV, produced from 2006 through 2013. Every version came with xDrive all-wheel drive and the 6-speed ZF 6HP automatic. Reliability score: 6.5 out of 10. It’s a vehicle that demands consistent maintenance, but with regular care it will cover 186,000 miles without an engine rebuild. The main risk areas are the air suspension, gasoline engines prone to oil consumption, and the turbos on the diesels.
The Problem
You climb into an E70 with 62,000 miles on the clock—and a month later you’re dealing with a sagging body, a drone from the wheel bearings, and oil consumption you can’t ignore. This is a vehicle with character: it demands regular investment, and an unprepared purchase can end in an expensive repair. Here are the failures that show up most often, and how to prevent them.
Symptoms
- Excessive oil consumption on the gasoline engines
- Power loss and blue smoke on the diesels
- Jerky shifts from the automatic transmission
- Clunks and vibrations when turning (transfer case)
- A sagging body after parking (air suspension)
- A drone at speed from the wheel bearings
Causes
Gasoline engines are the main source of trouble. On the N52, N54, and N55, excessive oil consumption sets in right after 37,000 miles. The cause is worn valve stem seals and coked-up piston rings. In neglected cases, consumption reaches 1 liter per 620 miles, which means replacing the seals and de-coking the rings.
On the turbocharged N54 and N55, add failure of the high-pressure fuel pump (HPFP). Typical failure mileage: 50,000–75,000 miles. A bad pump shows up as power loss, jerks under acceleration, and hard starting.
Diesels are more durable, but the turbochargers on the xDrive35d and xDrive40d fail by 62,000 miles—almost always because someone skimped on oil. Symptoms: power loss, blue smoke, and a whine while the engine runs.
Transmission: past 62,000 miles, the ZF 6HP automatic starts shifting with jerks as the torque converter wears and the fluid ages. The xDrive transfer case suffers from worn internal clutches, which produces clunks and vibrations when turning.
The Fix
Pre-Purchase Inspection
- Check the vehicle history by VIN—rolled-back mileage and crashes may have damaged the electronics and the air suspension.
- Evaluate the turbos on the diesels and bi-turbo versions: power loss, blue smoke, and a whine are signs of wear.
- Check the air suspension: leave the car parked for a few hours—a body that sits low afterward means the air springs or the compressor need replacing.
- Listen to the wheel bearings at 37–50 mph—a hum that grows louder in turns points to wear.
- Confirm the timing chain or timing belt was replaced on schedule—ask for the service records.
- Test the automatic transmission: shifts should be smooth, especially from first to second gear.
Maintenance Schedule
| Component | Interval | Notes |
|---|---|---|
| Engine oil | 6,200 miles | BMW-approved oils only—critical for the turbos and the HPFP |
| Automatic transmission fluid | 37,000–50,000 miles | Despite BMW’s claims of “lifetime” oil |
| Transfer case oil | 37,000 miles | Extends the life of the internal clutches |
| Accessory (serpentine) belt (N52) | 37,000 miles | A snapped belt damages the engine |
| Timing chain (N57 diesels) | Inspect at every major service | Sits at the rear of the engine—replacement is complex and expensive |
Air suspension (EHC) is the most expensive system to repair: replacing the compressor and the air springs takes serious money. Failures begin after 50,000–62,000 miles: first the body sags after sitting overnight, then the compressor runs more and more often—and louder.
Wheel bearings on the higher-output versions wear prematurely—the hum can appear as early as 50,000 miles.
Prevention
- Change the engine oil every 6,200 miles, especially on the turbocharged versions
- Refresh the automatic transmission fluid every 37,000–50,000 miles—don’t buy the “lifetime” oil marketing
- Change the transfer case oil every 37,000 miles
- Replace the accessory (serpentine) belt on the N52 every 37,000 miles
- Inspect the timing chain on the N57 diesels at every major service
- When buying, check the VIN history, the turbos, the air suspension, the wheel bearings, the timing chain or belt, and the automatic transmission
The Bottom Line
The BMW X5 E70 rewards attention generously and punishes corner-cutting. On the plus side: durable diesels (the xDrive30d especially), a well-built interior, and excellent handling. The weak spots: the air suspension, gasoline engines with a taste for oil, and the expensive timing chain job on the N57 diesels. The main rule: find an example with a documented service history and never skip the preventative work—do that, and the E70 will serve you for a long time.