Unveiled in 2001 alongside the E65 saloon, the long-wheelbase BMW 7 Series Long E66 extended the wheelbase by 14 cm to create an avant-garde luxury flagship. With its revolutionary Chris Bangle exterior design, steering-column gear selector and first-generation iDrive rotary controller, it represented a clean break with traditional BMW styling. Keeping this complex luxury cruiser in prime health requires disciplined BMW 7 Series maintenance, particularly targeting engine oil seals and electronic voltage stability.
The initial mechanical lineup comprised the N62 V8 engines (735Li, 745Li), the 730Ld featuring the M57 turbodiesel, and the towering 6.0-litre direct-injection N73 V12 in the 760Li. All models featured the world-first six-speed ZF 6HP automatic gearbox. The chassis integrated electronic damper control and Dynamic Drive active anti-roll bars, alongside rear pneumatic air suspension designed to maintain ride height under heavy passenger loads.