BMW E71 X6 — Common Problems

Overview

The E71 X6 (2008-2014) created the "Sports Activity Coupe" segment. It shares most components with the E70 X5.

Engine

N55 (xDrive35i)

• Standard N55 issues
• Best engine choice for reliability

N63 V8 (xDrive50i)

• All the N63 problems — oil consumption, valve stem seals, coolant pipes
• Avoid early N63 (2008-2012)
• N63TU (2012+) is significantly better

S63 V8 (X6 M)

• Rod bearing concerns (less documented than S65 but still a consideration)
• Oil consumption
• Turbo oil line leaks
• Extremely powerful (555 hp) but expensive to maintain

Chassis

• Rear air suspension — same issues as E70 X5
• Transfer case actuator failure
• Front thrust arm bushings
• Active roll stabilization — hydraulic system can leak

X6-Specific

• Rear visibility — the coupe roofline severely limits rear visibility
• Rear headroom — limited for rear passengers
• Tire costs — staggered setup, rear tires are expensive

Electronics

• FRM failure
• CAS module issues
• Comfort access problems
• iDrive CIC failures

Buying Advice

The N55 xDrive35i is the only sensible choice unless you specifically want V8 power. The X6 M is a beast but maintenance costs are extreme. Always check air suspension and transfer case.