BMW's sport sedan flagship has split into two distinct eras: the beloved and the bloated. The E39 remains the gold standard, timeless design, balanced performance, and a driving character that still feels modern decades later. The G30 (2017-2023) carried that legacy forward with handsome proportions, a brilliant B58 engine in the 540i, and the kind of daily-driver refinement that makes long commutes feel effortless. Then the 2024 G60 arrived, swollen to 7 Series dimensions with cost-cut interior plastics and awkward styling that owners say looks front-wheel-drive. Experts praise its tech and smoothness; enthusiasts mourn the loss of athletic soul. The smart play? A used G30 540i combines steep depreciation with genuine excellence, just budget for BMW maintenance costs that don't depreciate with the sticker price. Skip the current generation unless you prioritize tech over driving character and can stomach the design.
This is Mercedes doing what it does best: building a highway cruiser that wraps you in a quiet, refined cocoon while the miles disappear. The inline-six in the E450 delivers the silken power this chassis deserves, and owners who maintain them properly report 200k+ miles without drama. But if you're shopping used, generation matters enormously. Diesel models across multiple eras suffer AdBlue injector failures that clog systems and trigger check engine lights. Older examples need diligent maintenance or they'll punish your wallet, and the four-cylinder E350 feels like the wrong engine in this car. The current W214 generation earned genuine acclaim (Car and Driver's perfect 10/10, MotorTrend's 2025 Car of the Year), but you're still paying luxury repair bills to keep any E-Class running right. Buy the six-cylinder, keep up with services, and you get a car that genuinely elevates highway driving above the BMW and Audi alternatives.