page_title: Buick Gran Sport
section_title: Regal GS / Regal GSX
hierarchical_section_title: Buick Gran Sport / Other Gran Sports / Regal GS / Regal GSX
caption_attribution_description: 2011 Buick Regal
context_page_description: The Gran Sport name has been used on several high-performance cars built by Buick since 1965. In the GM brands hierarchy, Buick was surpassed in luxury and comfort appointments only by Cadillac, which did not produce performance models. As a result, the Buick GS series were the most opulently equipped GM sport models of their era.
context_section_description: From 1988 to 2004 and 2010 to present There is Buick Regal GS and Gran Sport models. For third Generations Buick Regal there was a Gran Sport version model. The Gran Sport option generally contained the following items:
  Leather bucket seats and center console
  Black, wide, body side moldings (coupe only)
  Gran Touring (FE3) suspension - which included faster power steering, and revised springs and struts
  Front air dam and aero rocker panels (coupe only)
  16 inch aluminum wheels
  Fog lamps
  Two tone paint (sedan only)
  Leather steering wheel
  Beginning in late 1990, the 3.8L (231 cu in) Series I V6 producing 170 horsepower (130 kW) was available. The 1997–2004 body style featured a 240 horsepower (179 kW) 3.8L Series II supercharged V6.
  For 4th Generation Buick Regal The 3.8 liter V6 supercharged Regal GS had a 1/4 mile ET of 14.9 seconds, and acceleration to 60 mph (97 km/h) took 6.7 seconds. The Regal GS, equipped with the supercharged 3.8 liter V6 engine (L67) produced 240 hp (179 kW) and 280 lb⋅ft (380 N⋅m) of torque. The Regal GS's PCM has programming that activates torque management to reduce wheel spin at launch. Regal GS was EPA rated at 18/27 MPG city/freeway.
  In the 2003 and 2004 model years, Buick, in collaboration with SLP Performance, came out with the Buick Regal GSX. They offered dealer-installed options and dealer supplied accessories for GS models. Like the GS Buicks that came before it, the SLP GSX came in three power train packages, referred to as stages. The Stage 1 package added 10 horsepower with the addition of a dual stainless steel cat-back exhaust system and free-flowing cold air induction system. For the Stage 2 package, a Hypertech Power Programmer with an SLP custom calibration tune was included with the Stage 1 components good for an extra 20 horsepower. The range-topping Stage 3 package added a 3.5 inch smaller diameter supercharger pulley to crank up the boost. With an advertised 30 more horsepower than stock, the Stage 3 GSX was conservatively rated at 270 horsepower and 312 pound-feet of torque. Since the parts were available from SLP over the counter for many years, there have been quite a few Regal GS sedans that have been cloned into a GSX for both appearance and performance purposes. Though the model didn’t officially debut until 2003, a licensed SLP dealer could perform the transformation on any Regal GS from 1997 to 2004. A true GSX can be verified from an SLP door jamb label with the correct part number for the kit.
  For the 5th generation Buick Regal, the GS version of the Regal was based on the Opel Insignia OPC and the Vauxhall Insignia VXR. This front-wheel drive sedan GS features Buick's Interactive Drive Control System with GS mode, a choice of an FGP Germany F40-6 six-speed manual or Aisin AF-40 (G2) six-speed automatic transmission, high performance brakes with Brembo front calipers and high performance strut (HiPerStrut) front suspension. 19 inch wheels will be standard and 20 inch forged aluminum wheels will be available. The GS is expected to accelerate from zero to 60 miles per hour in under seven seconds. It is equipped with GS-only high-output version of the Ecotec 2.0L turbo engine with 270 hp (201 kW) and 295 lb⋅ft (400 N⋅m) of torque. The GM LHU engine used in the GS trim makes 135 hp per liter.
  For the 6th generation Regal, from 2018 Buick released an updated version of the Regal GS. The new Regal is equipped with a GM LGX V6 3.6 producing 310 horsepower paired with a 9-speed automatic transmission yielding acceleration from zero to 60 mph in under six seconds.
caption: 2008-2017 Buick Regal GS sedan
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