With deliveries of the Tesla Model Y starting earlier than expected this month, new details about Tesla's electric crossover are emerging. Now that the official owner's manual has been released, we finally know the dimensions of the Model Y - and it's much larger than we thought. Despite being based on the Model 3 and sharing around 70 percent of its components, the Model Y is a lot longer, wider, and taller than its electric sedan sibling.

Compared to the Tesla Model 3, the Model Y is 2.2 inches longer, 2.8 inches wider, and 7.2 inches taller. Being a crossover rather than a sedan, it also has 1.1 inches more ground clearance, increasing from 5.5 to 6.6 inches, and the front and rear tracks increase by 2.2 inches.

The wheelbase has also stretched by 0.6 inches, providing considerably more legroom. In the second row, the Model Y has 1.7 inches more headroom and 5.3 inches more legroom than the Model 3, making it more comfortable for rear passengers, although front legroom is reduced by 0.9 inches.

For extra practicality, Tesla will offer a seven-seat option for the Model Y in 2021. Being larger than the Model 3 also means the Model Y is 344 pounds heavier, so it remains to be seen how this will affect the handling.

Currently, the Tesla Model Y is only available in Long Range and Performance guises. Both pack a dual-motor all-wheel-drive system and a 75-kWh battery pack providing a 316-mile range on a single charge for the Long Range model. 0-62 mph takes 4.8 seconds in the Long Range and 3.5 seconds in the Performance. Despite this, the range estimate for the Performance is only one mile less than the Long Range.

Be prepared to pay a premium for the extra performance, however, because the Tesla Model Y starts at $72,390 for the Long Range version and $84,390 for the Performance model. For comparison, the Tesla Model 3 starts at $39,990 for the Standard Range Plus and $56,990 for the Performance version, making it significantly cheaper than Model Y.