Lights with NISMO branding). R-Tune parts were a combination of more aggressive engine and suspension modifications such as: the NISMO 4 to 1 header, NISMO cold-air intake, rear NISMO 25mm anti-roll bar, NISMO camshafts, NISMO lower tie bar, and a NISMO suspension hard bushing kit. NISMO cosmetic upgrades were also available, which included a NISMO rear spoiler, a front and rear NISMO under spoiler/lip. Transmissions The 2000–2001 SE 2.0 L (SR20DE) and 2000-2006 1.8L (QG18DE) had the option of: An automatic 4-speed RE4F03B transmission 5 speed manual RS5F70A The 2.5 LE, and 2.5S automatics equipped with the 2.5-litre (QR25DE) used the 4-speed RE4F04B transmission. SE-R's were predominantly automatic and used the same RE4F04B transmission as the LE and 2.5S with the exception of the 2002 model year, that year the RS5F51A 5 speed manual open differential transmission was available. The 2002–2006 SE-R Spec Vs used the 6-speed RS6F51H transmission with a Helical limited slip differential (which had at least 2 revisions, 2002 models had different gearing from all the other years). Sixth generation (B16; 2006) Nissan introduced the sixth generation Sentra at the 2006 North American International Auto Show in January. Classified as a mid-size sedan by the EPA thanks to its interior passenger and cargo volume of 110 cubic feet (as the EPA considers "mid" or "intermediate" size a car with interior passenger and cargo volume between 110 and 119 cubic feet), the Sentra is bigger in every dimension than the B15 model, being 65 mm (2.3 in.) longer, 91 mm (3.2 in.) wider, and 113 mm (4.0 in.) taller. The wheelbase is also 167 mm (5.9 in.) longer than the previous model. The sixth generation also marked a change in Nissan's North American lineup, with the Nissan Versa becoming brand's entry-level model. This generation is based on the C platform architecture that also underpins the first-generation Nissan Rogue, Nissan Qashqai and also the T31 Nissan X-Trail, as well as other Renault models. The Sentra's standard engine is a 2.0-liter 16-valve inline-four rated at and of torque. Fuel economy for with the 2.0L mated to the CVT is rated at 26 city/34 hwy, and the 6-speed manual at 24 city/31 hwy. SE-R is rated at 24 city/30 hwy with the CVT being the only transmission available. SE-R Spec-V is rated at 21 city/28 hwy mated with the 6-speed manual. In 2007 and 2008, Nissan considered marketing a hybrid version