Here are several compelling variations of your headline, each tailored to emphasize different angles like urgency, exclusivity, and value, while maintaining a luxury appeal:

1. “This Rare Luxury Sedan Steal Won’t Last – Act Now or Miss Out Forever!”
   Why it works: Combines urgency (“Won’t Last”) with a fear-of-missing-out (FOMO) trigger, perfect for prompting quick action.
2. “Unbeatable Luxury Sedan Deal: Elevate Your Drive Without the Premium Price Tag!”
   Why it works: Highlights value (“Without the Premium Price Tag”) and positions the offer as aspirational yet attainable.
3. “Seize the Deal: This Luxury Sedan Steal Is the Opportunity of a Lifetime!”
   Why it works: Uses action-oriented language (“Seize”) and frames the offer as a once-in-a-lifetime chance, appealing to exclusivity.
4. “Limited-Time Luxury: Own a High-End Sedan at a Steal – But Hurry!”
   Why it works: Emphasizes scarcity (“Limited-Time”) and urgency (“Hurry”) while underscoring the luxury aspect.
5. “Your Dream Sedan Awaits: An Unmissable Luxury Steal You Can’t Afford to Ignore!”
   Why it works: Personalizes the offer (“Your Dream”) and uses bold language to stress importance (“Can’t Afford to Ignore”).
6. “Luxury Redefined: This Sedan Steal Blends Opulence and Value Like Never Before!”
   Why it works: Focuses on innovation (“Redefined”) and contrasts luxury with affordability, appealing to discerning buyers.

Final Tip: Pair your chosen headline with a subheadline or visual cues (e.g., “Limited Stock Available” or “Exclusive Dealer Offer”) to amplify urgency and credibility.