The BMW 5 Series E60 (sedan) and E61 (Touring/wagon) marked a major stylistic break under the Chris Bangle era. Highly controversial at its launch, its lines have aged remarkably well. It was a concentrate of technologies for its time: introduction of the iDrive system, Head-Up Display (HUD), Active Steering, and an aluminum front end for ideal weight distribution (50/50). The facelift (LCI) in March 2007 brought LED lights, a better-finished interior, and new engines. While its dynamic qualities are exceptional, this generation is known for its electronic complexity and enormous reliability disparities depending on the engine. Overall rating: 7/10 (highly engine-dependent).
The BMW 5 Series E60/E61 is a superb touring car, but it does not forgive neglect. For a gasoline purchase, the golden rule is to prioritize indirect injection engines: the M54 (2003-2005) or the N52 (2005-2007). They offer the authentic BMW experience with excellent reliability. Avoid the N53 (2007-2010) unless the injectors, HP pump, and NOX sensor have been recently replaced with revised parts. The V8s (N62) are reserved for experienced DIYers or those with large budgets. On the diesel side, the 6-cylinder M57 remains a monument of reliability (once the flaps are removed), but avoid the 4-cylinder N47 (520d LCI) and its fragile timing chain. Prioritize an LCI model (2007+) for the finish, but with an N52 (rare transition) or M57 engine.