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Buick Regal GS for North America (copyright image) (copyright image)

Home > News > General Motors > Buick

7th November, 2010

Buick has revealed the production version of the 2012 Regal GS, an even sportier expression of the Regal sport sedan that went on sale earlier this year across North America. Powered by a high-output, exclusive Ecotec 2.0 litre turbocharged engine matched to a six-speed manual transmission, the GS delivers an estimated 190 kW (255 horsepower) and 400 Nm (295 lb.-ft.) of torque. Buick’s Interactive Drive Control System is standard on the GS, allowing drivers to customise the driving experience by changing the suspension settings and steering sensitivity between three modes: standard, sport and GS.

“Built on the performance foundation of the Regal, the Regal GS was designed as an even sportier expression of responsive performance and style,” said John Schwegman, vice president of Buick marketing. “The driving experience is powerful and spirited; and the GS represents the next entry in Buick’s product renaissance.”

The Buick Regal GS was unveiled last week at a consumer event in Miami, Florida. It goes on sale in the second half of 2011.

Product highlights include:

  • Exclusive Ecotec 2.0L turbocharged and intercooled engine rated at an estimated 190 kW (255 horsepower) and 400 Nm (295 lb-ft of torque)
  • Six-speed manual transmission, with six-speed automatic with Driver Shift Control to be offered later
  • Interactive Drive Control System with GS mode
  • Four-wheel independent system with HiPerStrut front suspension
  • High-performance four-wheel disc brake system with Brembo front callipers
  • Standard 19-inch, 5-Twin Spoke alloy wheels and all-season tyre and optional 20-inch, 5-Twin Spoke polished alloy wheels with performance tyres.

The exterior design features unique front and rear fascias, with the front fascia incorporating prominent, vertical air intake slots and specific grille treatment – with the vertical elements accented in a satin-metallic finish. The rear fascia has a pair of integrated, satin-metallic trapezoidal exhaust outlets. Rocker panel extensions and an integrated rear spoiler are also woven into the design. The GS cuts a sportier stance, too, with a slightly lower ride height than other Regal models and aggressive 19-inch, 5-Twin Spoke alloy wheels and all-season tyres (20-inch, 5-Twin Spoke polished alloy wheels with performance tyres are optional).

Inside is a racing-inspired, flat-bottom sport steering wheel and metal sport pedals, along with leather-appointed 12-way power-adjustable sport driver and front passenger heated seats, which include four-way power lumbar. The GS-specific black interior is accented with satin-finish elements on the instrument panel, steering wheel and console, while the instrument panel glows white when the driver engages the GS mode of the Interactive Drive Control System (IDCS).

Standard amenities for the Regal GS include:

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  • Passive keyless entry with push-button start
  • Standard XM Satellite Radio with three-month trial service
  • Harmon/Kardon premium 320-watt sound system with nine speakers
  • Bluetooth phone connectivity
  • Leather-wrapped flat-bottom steering wheel with audio controls
  • Leather-appointed sport seating
  • Heated driver and front passenger seats, with 12-way adjustable driver and front passenger seats – including four-way lumbar adjustment
  • 120-volt accessory power outlet
  • Power windows with express up/down feature in the front and express down in the rear.
  • Front and rear ultrasonic parking assist
  • Bi-xenon HID headlamps.

Turbocharging and HiPerStrut

Power for the Buick Regal GS comes from a high-output version of the Ecotec 2.0L turbocharged DOHC VVT engine with direct injection technology. It is based on the engine that will be available on Regal CXL later this year, but the engine and turbocharger are tuned to deliver greater boost pressure in the GS. The output is rated at 190 kW (255 horsepower) and 400 Nm (295 lb.-ft.) of torque. A three-inch-diameter exhaust system provides reduced back pressure, resulting in higher engine power

Direct injection technology helps the engine deliver more power through increased efficiency, while maintaining fuel economy and lowering emissions. That means less fuel is consumed and lower emissions generated – including a 25-per cent drop in cold-start hydrocarbon emissions. Variable valve timing optimizes power, efficiency and emissions across the entire rpm band.

“We’ve been combining direct injection and variable valve timing with boosted engines since 2006, and there’s no question the Regal GS turbo has the responsiveness and acceleration of a 3.5L V6, while delivering the fuel economy of a 2.0L four,” said Mike Anderson, Ecotec global chief engineer and programme manager.

The engine is matched to a standard six-speed manual transmission. A six-speed automatic transmission will be available at a later time.

The Regal GS rides on a relatively long wheelbase of 2,738 mm (107.8 inches), which delivers refined, well-balanced vehicle dynamics. It also features a four-wheel-independent suspension, with a unique High Performance Strut (HiPerStrut) front suspension design. The HiPerStrut system helps reduce torque steer and maintain negative camber during cornering; the driver experiences reduced torque steer, improved grip and increased cornering power, along with crisper handling, steering precision and feedback.

The four-link independent rear suspension is designed to minimise unwanted toe and camber effects during spirited driving manoeuvres, enhancing vehicle stability.  Both front and rear dampers incorporate active Computer Damping Control (CDC), continuously changing damper characteristics to maintain optimal vehicle ride control over varying road surfaces and profiles. More aggressive, performance-oriented damping characteristics can also be selected by the driver through the Interactive Driver Control System.

Braking power comes from a large diameter four-wheel disc brake system featuring Brembo front callipers. A standard, four-channel anti-lock brake system is tuned to reduce stopping distances over varied road surfaces and conditions.  An electronic parking brake is actuated via a centre console-mounted control. The Regal GS also features standard StabiliTrak stability control system with integrated, full-function traction control.

Interactive Drive Control System

The Buick Regal GS is also equipped with Interactive Drive Control System (IDCS) chassis technology (also offered on other Regal models with the 2.0L turbo engine). It delivers enhanced vehicle stability and greater driving safety. The driver selects among three operating modes – standard, sport and GS – that change the suspension settings, and steering sensitivity through the variable-effort steering system.

A sophisticated driving mode control module continually monitors driving style utilising yaw rate, lateral and longitudinal acceleration, steering wheel, throttle and vehicle speed. It defines the dynamic vehicle state, including acceleration, braking and cornering, to optimise chassis reactions. It also executes all of the IDCS driver selections. All four dampers are electronically controlled and continuously adapt within milliseconds to the prevailing road conditions, vehicle movements and individual driving style.

Selecting GS mode optimises the car for dynamic driving, tightening the suspension and steering response. “Standard,” or the default mode, is the setting for all-around use. The sport mode provides a level of performance between standard and the GS modes.




2012 Buick Regal GS

Body style/driveline:

four-door, five-passenger, front-engine transaxle. Front-wheel drive mid-size sedan


steel body frame integral (unibody) with front and rear crumple zones; galvanised steel front guards, bonnet, roof, door panels, one-piece body side outer panel, thermal plastic olefin (TPO) bumper fascias

EPA vehicle class:


Manufacturing location:

Oshawa, Ontario, Canada

Key competitors:

Acura TSX, Audi A4



2.0 litre DOHC VVT I-4 ECOTEC Turbo High Output

Displacement (cc / cu in):

1,998 / 122

Block material:

cast aluminium

Cylinder head material:

cast aluminium


overhead camshafts, four-valves per cylinder, continuous variable valve timing for intake and exhaust

Ignition system:

individual coil-on-plug

Fuel delivery:

direct injection with variable high-pressure rail and electronic throttle control

Compression ratio:


Horsepower (kW / hp @ rpm):

190 / 255 @ 5,300 (est.)

Torque (Nm / lb-ft @ rpm)

400 / 295 @ 2500-4000 (est.)

Recommended fuel:

premium petrol recommended but not required

Max engine speed:

6,350 rpm

Emissions controls:

close-coupled catalytic converter; variable valve timing; 58x ignition system; returnless fuel rail; wide-range O2 sensor




Aisin AF40


six-speed speed manual

six-speed transverse, electronically controlled, overdrive automatic with torque converter clutch

Gear ratios (:1):























Final Drive





independent, MacPherson strut-type with dual-path mountings, specifically tuned coil springs, direct-acting stabiliser bar (hollow); hydraulic ride bushings; continuous damping control (Interactive Drive Control System)


four-link independent rear; hollow stabiliser bar; continuous damping control (IDCS)

Traction control:

all-speed using engine torque reduction and brake intervention

Steering type:

hydraulic, variable-effort

Steering wheel turns lock-to-lock:


Turning circle, curb-to-curb (metres / feet):

11.4 / 37.4 (19-inch wheels)

Steering ratio:




four-wheel disc w/ABS (w/ESC)

Brake rotor diameter – front (mm / in):

355 / 14.0 vented; four-piston aluminium Brembo calliper

Brake rotor diameter – rear (mm / in):

315 / 12.4 vented; single-piston, aluminium calliper


Wheel size and type:

19-inch alloy, 5-Twin Spoke
20-inch polished alloy, 5-Twin Spoke


Goodyear Eagle RSA P245/40R19
Pirelli P-Zero P255/35-ZR20



Wheelbase (mm / in) :

2,738 / 107.8

Overall length (mm / in):

4,831 / 190.2

Overall width (mm / in:

1,811 / 73.1

Overall height (mm / in):

1,480 / 58

Front track (mm / in):

1,585 / 62.4

Rear track (mm / in):

1,587 / 62.5


Seating capacity (front / rear):

2 / 3

Headroom (mm / in):

985 / 38.8 (front) 935 / 36.8 (rear)

Legroom (mm / in):

1,069 / 42.1 (front), 947 / 37.3 (rear)

Shoulder room (mm / in):

1,440 / 56.7 (front), 1,382 / 54.4 (rear)

Hip room (mm / in):

1,407 / 55.4 (front), 1,328 / 52.3 (rear)

EPA passenger volume (litres / cu ft):

2,741 / 96.81

EPA interior volume (litres / cu ft):

3,146 / 111.1

Cargo volume (litres / cu ft):

403 / 14.25


Fuel tank (litre / gal):

70 / 18.5

Engine oil (litre / qt):

6.0 / 6.3

Curb weight (kg /lb):

1,683 / 3,710


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