A Choice of Two Efficient Powerplants

Altima's exhilarating driving pleasure comes from a tuned combination of
strong acceleration, responsive handling and dynamic sound - provided
by advanced engine designs and the proven Nissan front-wheel drive "D"
platform.
Two powerplants are once again available in 2011. The 3.5-liter
24-valve DOHC V6 is rated at 270 horsepower and 258 lb-ft of torque and
offers strong acceleration and a tuned, resonant sound quality. The V6
features minimized friction, superior cylinder head cooling and twin
knock sensors.
Also available is a 2.5-liter DOHC 16-valve 4-cylinder producing 175
horsepower (170 hp CAL) and 180 lb-ft of torque (175 lb-ft CAL). It
features a silent chain drive and a balancer system (with balancer
changed to a center-mounted location for excellent NVH) that effectively
negates vibrations without taking up much space - combining ideal
packaging and smoothness.
Both engines feature continuously variable valve timing, modular engine
design, microfinished crank journals and cam lobes, molybdenum coated
lightweight pistons and electronically controlled throttles. Altima's
standard dual exhaust system is designed to reduce exhaust backpressure
by 35% on the 4-cylinder and 50% with the V6 (over the previous
generations). Both systems utilize large tube diameters and include
dual chrome-tipped exhaust finishers.
Nissan's advanced Xtronic CVT?, which is designed to create a true
synergy between engine and transmission with smooth, responsive,
fluid-feeling performance and efficient operation, is standard on all
models. The CVT has been tailored specifically for use with the Altima.
The V6 CVT features a "Sport" mode controller with a high-speed central
processing unit and Adaptive Shift Controller with adaptive logic for
fast shifting in both normal and manual modes. The adaptive logic
feature delivers the best shift pattern based on the driving environment
and driver's actions. It utilizes 700 programmed algorithms to adjust
to differing conditions, such as uphill or downhill driving, as well as
adapting to three styles of driving - economy, normal and sporty.
Altima's independent front suspension with advanced geometry and shock
absorbers with rebound springs provides responsive handling and a
comfortable ride. The subframe-mounted front suspension makes extensive
use of lightweight aluminum parts, while an X-type upper cowl structure
helps establish front body rigidity for suspension mounting.
Altima also features a low engine-mounting position with a six-point
pendulum-type mounting system and the half-shafts are set at equal
angles and nearly parallel to the ground - virtually eliminating torque
steer.
The rear multi-link independent suspension design separates the rear
shock absorbers and springs for minimized friction and the shocks are in
line with the center of the rear wheels, providing excellent damping
and almost no harshness. Front and rear stabilizer bars are standard.
Altima 3.5 SR offers larger diameter stabilizer bars and unique spring
rates and strut damping, as well as 17-inch wheels and tires.
Vehicle Dynamic Control (VDC) with Traction Control System (TCS) is
standard on all Altima models. Altima's standard twin-orifice
vehicle-speed-sensitive power rack-and-pinion steering system provides
light steering effort at low speeds and a secure feeling at high speeds,
along with a balanced, "on center" feel.
Braking for the 2011 Altima is provided by standard 4-wheel disc brakes
with 4-wheel, 4-channel, 4-sensor Anti-lock Braking System (ABS) with
Electronic Brake force Distribution (EBD), which optimizes brake force
depending on load condition (passengers and cargo). A variable ratio
pivot brake pedal provides a rigid feel at freeway speeds and less
sensitive, more controllable operation in city driving.
The 2011 Altima Sedan comes equipped with a number of standard safety
features, including the Nissan Advanced Air Bag System (AABS) with
dual-stage supplemental front air bags with seat belt and occupant
classification sensors, front seat-mounted side impact supplemental air
bags and roof-mounted curtain side impact supplemental air bags for
front and rear-seat outboard occupant head protection.
Other standard equipment includes front seat belts with pretensioners
and load limiters, front seat Active Head Restraints, the LATCH System
(Lower Anchors and Tethers for CHildren), Zone Body construction with
front and rear crumple zones and Tire Pressure Monitoring System (TPMS).