The standard 2.0L engine’s turbocharger features a twin-scroll design that uses
exhaust tuning to generate balance between maximum power and excellent turbo
response, enabling the engine to deliver a broad torque band. In fact, it delivers 90
percent (260 lb-ft / 353 Nm) of its peak torque from 1,700 rpm to 5,500 rpm and a
full 295 lb-ft of peak torque (400 Nm) from 3,000 to 4,000 rpm in the Regal. For
the Regal GS, peak torque is reached at 2,500 rpm and is maintained through
4,000 rpm. Those broad torque bands are supported by boost levels as high as 24
psi (1.65 bar) in the speed range, engineered to give the Regal and Regal GS
assuring, exhilarating feelings of immediate power on demand.
Six-speed automatic transmissions are matched with the engines. GS customers
have the choice of a six-speed manual, as well, at no additional cost – making it
one of the few vehicles in the segment to offer a turbocharged engine with manual
transmission.
Chassis and suspension
The Regal’s chassis and structural systems were developed globally, enabling the
handling and dynamics of a luxury import sport sedan with the quiet, refined ride
expected of a Buick.
It was engineered with one of the most rigid body structures in the segment, which
supports more precise suspension tuning and a quieter ride. Highlights include:
A long wheelbase of 107.8 inches (2738 mm) gives the Regal refined, well-
balanced vehicle dynamics and supports comfortable ride tuning
Independent MacPherson strut front suspension
Regal GS and all AWD-equipped models feature a four-wheel independent
suspension with a unique High Performance Strut (HiPer Strut) front
suspension design. HiPer Strut improves ride and handling by reducing
torque steer; improving vehicle sensitivity to tire irregularities and wheel
balance; more linear and communicative steering through improved camber
control; and improved impact isolation on bumps and rough surfaces
A four-link independent rear suspension is standard on FWD models; a
sophisticated H-arm design is employed on AWD models, delivering excellent
ride quality and handling, while minimizing road noise
Dual-pinion electric rack-and-pinion power steering is standard on Regal FWD
models; belt-driven electric power steering is used on Regal AWD and all GS
models
All models feature four-wheel disc brakes, with 11.7-inch front rotors on
2.4L-equipped models; 12.6-inch front rotors on Regal with the 2.0L turbo
engine and 13.6-inch front rotors with Brembo aluminum calipers on GS.
