Audi S7.
What to Check Before Buying.

The Audi S7 is a high-performance five-door fastback that blends executive refinement with serious straight-line pace. Powered by turbocharged V6 or V8 engines depending on generation, it appeals to buyers wanting a practical family car that doubles as a capable long-distance cruiser with genuine performance credentials. Most examples have covered motorway miles, so checking service history and wear on consumables is essential.

The average used car has 3+ known model faults the seller won't mention.