The company planned to offer rear-wheel-drive models, but instead all models use all-wheel drive. The standard AWD has on both the front and rear motors, while the performance edition has front and rear. With an optional towbar, the Model X has a towing capacity of up to 5000 lb or 2250 kg. At the towing speed limit in California, a Model X may have 70% of the EPA-registered range when pulling a travel trailer. Energy consumption The following table shows the EPA's official ratings for fuel economy in miles per gallon gasoline equivalent (MPGe) for the variants of the Model X rated and as displayed in the Monroney label. Production and sales Tesla started taking reservations for the Model X in February 2012 without announcing prices. The standard Model X required a deposit, while the limited time production Signature model required a deposit in 2013. More than 20,000 Model Xs had been reserved by September 2014. In August 2015, user groups estimated around 30,000 Model X pre-orders had been received, compared to 12,000 for the Model S. The first six Founders Series models were delivered at a market launch event in the Fremont factory on September 29, 2015. The first Signature edition was delivered on December 18, 2015. Pricing for the limited edition Signature version of the Model X varies between and , while the standard production version of the Model X will be priced at more than a comparably equipped AWD Model S that is priced at for the base Model 70D. After the first quarter of 2016 all Tesla Model X deliveries had gone to US customers. Nevertheless, in January 2016 a Tesla car other than the Model S was registered in Germany and a Tesla Model X was sighted driving there with a license plate from Ingolstadt. Since the Audi headquarters are located in Ingolstadt, this led to speculation that Audi has acquired a Tesla Model X as part of its effort to develop its own battery-electric SUV. Tesla produced 507 Model X in the fourth quarter of 2015, of which 206 were delivered to customers. Model X sales totaled 2,400 units during the first quarter of 2016. According to Tesla Motors, deliveries were lower than expected because production was impacted by severe Model X supplier parts shortages in the first two months of 2016, and because Tesla had been too ambitious in wanting advanced features (committed