The Mercedes-Benz S-Class enjoys some of the most loyal owners in the full-size luxury sedan segment. Its multi-generational buyers owned Heckflosse 220 SEs in the 1960s, powerful 450 SEL 6.9s in the 1970s, and seemingly bulletproof W140s in the 1990s. That devotion can be both a blessing and a curse, since the S-Class must improve over its predecessor but can’t change so much as to alienate those repeat buyers.
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