The Toyota Tundra debuted in 1999 as a 2000 model year and has since then evolved into a larger and more powerful truck. Critics say that it is the wrong size or aimed at the wrong audience, but it has also met praise for its non-standard approach to the pickup scene. It is currently into its third generation since it launched. From the beginning, the Tundra was offered with a choice of two engines: a 3.4-liter V-6 producing 190 hp and a 4.7-liter V-8 outputting 245 hp; and TRD supercharged versions of both engines were offered for some extra power. In 2005, the engines were upgraded when the V-6 was replaced with a 4.0-liter unit and the V-8 received variable valve timing. The first-generation Tundra's styling was definitely conservative. It was offered in 3 trims: Regular, and Double Cab configurations. Toyota's first attempt at a full-size truck was only able to tow around 7,000 pounds. In 2006, the second-generation Tundra arrived, advances included a new 5.7-liter V-8 engine option and bumping the tow rating up to 10,100 pounds, resulting in a much more competitive figure in the half-ton class. This new Tundra offered a choice of three engines: the 4.0-liter V-6, a 4.6-liter V-8 making 310 hp, and a 5.7-liter V-8 producing 381 hp. The Regular Cab model offered a minimalist feature set, but it had options to upgrade more advanced features. The Double Cab model started at a higher base specification. The CrewMax model offered luxury features like an standard power vertical sliding rear window and an available power moonroof, as well as optional unique exterior accents including a chrome-trimmed power-folding side mirrors, chrome grille surround, and more. There were two bed configurations for this Tundra: standard and long, although the long bed was only available on the Regular and Double Cab models. The V-6 model was only available in FWD drive layout, while the V-8s were available in either FWD or AWD. Safety ratings for this Tundra were good, four-star overall ratings from the NHTSA and awarded with the truck earning the IIHS' Top Safety Pick at the time. In 2013, a new Display Navigation with Entune system was added as an option revolving around a newly added 6.1-inch high-resolution touch screen with split-screen capability. This system carried a USB port with iPod control, an integrated rearview-camera display, hands-free calling, HD Radio with iTunes Tagging, SiriusXM satellite radio capability, Bluetooth music streaming and voice controls.