engine. The interior of the Indigo featured a few exclusives over the Indica, such as HVAC and fabric upholstery on all variants, and power windows for all doors on the top model. The steeper angle of the C-pillars meant that the Indigo lacked a rear windshield wiper. A minor design refresh in 2004 introduced a new 1.4 L turbocharged diesel engine. In 2006, Tata Motors introduced the first major design update for the Indigo, with new body panels, a redesigned front grille housing double-barreled headlamps, triangular front fog-lamps, a multi-reflector tail-lamp cluster with dual brake lamps; a newer 3-spoke steering wheel, refreshed dual-tone fabric interiors, and an audio system with a CD player. Under the hood, it featured a new 1.4 L Dicor turbocharged common rail diesel engine, which produced and complied with the Bharat Stage III emission norms. The 2006 Tata Indigo formed the base platform for three other cars, the Indigo Marina station-wagon, the Indigo XL sedan, and the Indigo CS compact-sedan. Indigo XL (2007–2009) Launched in 2007, the Indigo XL was a variant of the 2006 Indigo, with its wheelbase increased by 200 mm, and a few upmarket features. The added wheelbase translated into increased legroom in the second seating row and a bigger trunk. Tata Motors positioned it as a premium product and equipped it with a few upmarket features such as optional leather upholstery, rear air-conditioner vents, a rear center arm-rest with cup-holders, and a new 16-valve MPFI petrol engine option, with DOHC and a power output of . It retained the 1.4 L Dicor engine from the Indigo. In 2009, with the introduction of the Indigo Manza based on its newer X1 platform, Tata Motors pulled the Indigo XL from consumer sales, and relegated it only to fleet sales as a taxi. The 2009 Indigo XL retained most of its feature-set from the 2007 original, with the exception of lack of leather upholstery and factory-fitted audio system. The car was offered in three engine variants, beginning with the 16-valve MPFI petrol engine carried over from the original, with a newer Bharat Stage IV-compliant catalytic converter, a dual-fuel CNG variant, which can switch on-the-fly between petrol and CNG, with a factory-fitted CNG kit; and the 1.4 L CR4 turbocharged common-rail diesel engine, also Bharat Stage-IV compliant, with a power output of . Indigo CS (2008–2016) The Indigo ECS (compact-sedan) was launched in 2008, as a