The short answer
Based on available data, the Lamborghini Sian comes out ahead of the Lamborghini Aventador on power. Check the specs table and owner sentiment below for the full comparison before deciding between the two. Both are covered by real owner reports on CarWizz.
Overall
Owner sentiment is overwhelmingly positive, centered on the vehicle's iconic status, dramatic design, and powerful V12 engine. The Aventador is universally recognized as a landmark supercar that delivers an extreme, head-turning experience. It is frequently described as the definitive "flagship" Lamborghini, prized for its menacing looks, exhilarating sound, and raw, theatrical presence.
Best version to buy
SVJ (Super Veloce Jota): The SVJ is specifically highlighted as the most track-oriented and capable variant, described as the closest thing to a "road legal race car" from Lamborghini. It is noted for holding a Nürburgring production car lap record, cementing its status as the pinnacle performance version of the Aventador lineage.
Known issues
Overall
Sentiment is overwhelmingly positive, focused on the vehicle's status as an exclusive, technologically significant flagship. The Sian is universally recognized as a rare, multi-million dollar hypercar with a production run of only 63 coupes and 19 roadsters to honor Lamborghini's founding year. Owner and enthusiast discussions are dominated by admiration for its dramatic, angular design, though some find the aesthetic divisive or a continued evolution of the established Aventador silhouette.
Best version to buy
Insufficient owner data available to distinguish between coupe and roadster variants based on driving experience. All discussions reference the vehicle's exclusivity and technological premise rather than comparing trim or configuration choices.
Known issues
The verdict
The Lamborghini Sian is the better choice for most buyers.
It has more power on its best-equipped version than the Lamborghini Aventador, based on the data above. If efficiency matters more to you than outright power, the Lamborghini Aventador is worth a closer look instead.
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Which is more reliable, the Lamborghini Aventador or the Lamborghini Sian?
Owner reports show similar reliability sentiment for the Lamborghini Aventador and the Lamborghini Sian. Check the known issues listed above for specific differences between the two.
Which is better for families, the Lamborghini Aventador or the Lamborghini Sian?
Data on family-specific factors like cargo space is limited for one or both models, but based on available reports, both are positioned as practical daily drivers. Check the specs table above for seating and body type.
Which has better fuel economy, the Lamborghini Aventador or the Lamborghini Sian?
Fuel consumption data is limited for one or both models. Check the specs table above for the figures available on each catalogued version.
Which is cheaper to maintain, the Lamborghini Aventador or the Lamborghini Sian?
Exact maintenance costs aren't in our data, but reliability signals above are the closest proxy: fewer reported issues generally means lower repair costs over time.