2007 MAZDA RX-8:
THE ROTARY REVOLUTION ROLLS ON
– Rotary-Powered RX-8 Remains
the Only Rotary-Powered Mass Production Vehicle in
the World –
High-powered, lightweight and perfectly balanced
for nimble handling and supreme control, the Mazda
RX-8 is unlike any other sports car in the world.
From the industry’s only rotary engine to the
innovative free-style doors, the RX-8 is a sports
car like no other.
The 2007 model-year edition continues to push the
parameters of the sports car segment, this year with
only minor updates. New for 2007, the Grand Touring
model offers available Sand leather-trimmed seats,
while the Touring and the Grand Touring models add a
standard 6-disc CD changer. Two new exterior colors
are available on all 2007 RX-8 models – Crystal
White Pearl and Stormy Blue Mica.
“Since its creation, the RX-8 has continued to
win rave reviews from the automotive press,” said
Tetsu Nakazawa, RX-8 vehicle line manager. “The RX-8
is a sports car built for the real world; ideal for
zooming around a track, but equally suitable for
taking the kids to soccer practice. It is a true
sports car that can pull double duty."
The 2007 Mazda RX-8 is available as either a
232-horsepower model fitted with a six-speed manual
transmission, or a 212-horsepower model fitted with
a six-speed automatic with steering- wheel-mounted
paddle shifters for a Formula 1-style driving
experience (the change in
horsepower ratings from 2006 is due to the new
SAE rating standards). Both automatic and manual
transmission cars come equipped with power windows,
mirrors and door locks, cruise control and an
AM/FM/CD audio system with six speakers.
RENESIS ROTARY ENGINE
The lifeline of this powerfully agile sports car
rests underneath the hood thanks to its advanced
RENESIS ( Rotary Engine ge nesis – or rebirth of the
rotary engine) engine. The Mazda RX-8 remains the
only mass produced rotary-powered passenger car in
the world.
By turning a triangular rotor in a cocoon-shaped
combustion chamber, the RX-8’s rotary engine
efficiently performs the four processes of intake,
compression, combustion and exhaust. The RENESIS
engine is remarkably smooth and high revving — all
the way to 9,000 rpm (7,500 rpm on Sport
A/T–equipped models) — and offers a smaller engine
footprint than traditional internal combustion
engines (some 60 percent smaller and lighter than a
comparably powered V-6, and 40 percent smaller and
lighter than a four-cylinder). In fact, the
packaging and styling that define the RX-8 would not
have been possible had Mazda engineers chosen a
conventional piston engine.
Improving upon 40 years of rotary designs, the
RENESIS engine features side intake and exhaust
ports with nearly 30 percent more intake area and
twice as much exhaust area than its predecessors.
The efficiencies gained through larger intake and
exhaust ports exclude the need for forced induction.
The RX-8’s normally aspirated 1.3-liter engine
might appear diminutive to the untrained eye when
compared to large-displacement V-8s or heavyweight
V-10s or
V-12s. However, through the incredible
efficiencies of a rotary powerplant, an advanced
three-stage intake system and an electronic
throttle, the RENESIS engine delivers smooth, linear
power on a grand scale. The 2007 RX-8 does not
sacrifice emissions for power, though. Through
improvements to the
port design, overlap between the intake and
exhaust ports has been eliminated, significantly
reducing exhaust emissions, improving fuel economy
and allowing the car to meet the strict Tier2 Bin 5
Federal emissions classification. The effort made by
Mazda engineers to improve emissions is a prime
example of the concern for environmental impact
maintained throughout the development process.
By placing the powerplant low and far back in the
engine bay, in what Mazda calls an advanced front-midship
layout, the center of gravity is lowered, which in
turn improves vehicle balance. In addition, the fuel
tank is placed ahead of the rear axle, and all
seating is within the wheelbase and track of the
car. Combined, these factors contribute to a perfect
50/50 vehicle weight distribution, low yaw-inertia
movement and superb handling characteristics. With
such excellent balance, it is little wonder the RX-8
feels right at home on the twists and turns of Mazda
Raceway Laguna Seca, negotiating a tight freeway
onramp or in stop-and-go traffic.
A RACE CAR AT HEART
The RX-8’s demeanor on the track is not
overlooked by the motorsports community. The same
RENESIS engine found in production RX-8s is used in
the professional Formula Mazda series, a popular
open-wheel racing series run on the nation’s most
demanding race tracks. Formula Mazda is widely
regarded as a training ground for developing drivers
looking to build a career in motorsports. The fact
that the series uses a showroom-stock, non-modified
RENESIS engine is a testament to the power,
reliability and light-weight of the RX-8 powerplant.
The RX-8 also campaigns in the Grand American
Road Racing Association’s Grand Am Cup Street Tuner
(ST) division. The ST division consists of
production cars driven straight from the showroom to
the race track with limited racing modification.
Here, the superb handling characteristics and
near-bulletproof RENESIS engine already have taken
the RX-8 to victory circle many times, including the
2005 drivers’ and manufacturers’ championships, and
all indications point to many happy returns.
SUSPENSION AND STEERING
The RX-8 uses an aluminum double-wishbone front
suspension, reducing unsprung weight over the use of
steel components. By mounting the upper and lower
arms on a highly rigid sub-frame, the long arms
ensure linear alignment changes throughout the
jounce and rebound of the front wheels. All wheels
receive mono-tube gas-filled shock absorbers
designed with large-diameter internal pistons and
valving, which offer excellent road feedback and a
smooth ride.
An electric rack-and-pinion power-steering system
transmits just the right amount of road information
back to the driver. Mazda engineers have chosen to
pursue their own path by using an electric motor for
steering assistance rather than a conventional
power-steering pump. The electric motor provides
additional assistance at low speeds to ease parking
and reduces steering assistance at higher speeds to
provide greater road feel, responsiveness and
feedback. And, in keeping with the rest of the
development on RX-8, it is far lighter and easier to
package than a conventional power-steering rack.
PRACTICAL STYLING
The RX-8’s unique “freestyle” four-door design is
proof that a true sports car does not need to
sacrifice space or convenience for performance. The
advanced design of the rear-hinged rear doors,
provides a large door opening, allowing adult-sized
passengers to easily enter and exit the vehicle.
This design is also advantageous when securing a
baby or a small child in the back seat. With a
spacious rear seat area providing ample passenger
room for four full-size adults, and enough trunk
space for a weekend’s worth of luggage, this sports
car proves its versatility.
Taut muscular lines give RX-8 the liberating look
of an athlete in motion. The muscular styling
maintains classic sports car proportions while
adding a Zoom-Zoom edge that is unmistakably Mazda.
Integrated throughout the exterior is the unique
triangular rotor design, which clearly can be seen
in the front fascia, head lamps, hood and rear
bumper valence.
The RX-8’s exterior styling presents a genuine
sports car form, while the interior boasts a
comfortable and intelligently designed cabin. An
extremely low cabin floor allows the seats to be
mounted low in the chassis, which, along with a low
instrument cluster and hood, enhance driver
visibility. Mazda designers concentrated on the
shape of the front seat backs and the rear seat
cushions to ensure adequate rear-seat knee room.
Front seat slide-rails are positioned to allow
maximum leg room for rear-seat passengers.
The rotary design element is incorporated through
the interior of the RX-8 in creative ways, appearing
in the seats, center console, shift knob and
emergency brake. The stylish cabin also evokes a
sense of luxury and high-end quality. Mazda’s design
team examined every aspect and component of the
interior and has created an elegant, driver-centric
atmosphere. Through the use of advanced ergonomic
research, Mazda engineers established improper
seating posture to be a cause of driver fatigue and
built in optimum support in the front seats to help
offset discomfort. In addition, the soft blue
lighting used in the RX-8’s instrument cluster was
found to reduce eye fatigue and strain.
SUPERIOR SAFETY
When designing the RX-8, safety was given as much
of a priority as was performance. For Mazda, the
safety process incorporates both accident avoidance
and accident protection. In effect, this approach to
safety means the RX-8 can help the driver avoid
various dangers and protect occupants in the
unfortunate event of a collision. In rollover tests
performed by the National Highway Traffic Safety
Administration (NHTSA), the RX-8 achieved an
impressive five-star rating.
Mazda engineers integrated numerous active and
passive safety elements throughout the car. Active
safety features, which require input from the
driver, include the use of large ABS-equipped disc
brakes on all wheels as well as precise steering and
suspension systems. Dynamic Stability Control
(standard on manual transmission cars with Sport
Package, optional on RX-8s with automatic
transmissions) delivers a superior level of handling
that can be disabled when driving and road
conditions allow safe operation.
Passive systems, or those that take effect
automatically without the driver’s involvement, also
are present throughout the RX-8. Despite the absence
of a center B-pillar, the RX-8 has an exceptionally
rigid body, accomplished through the use of a series
of locking pins, which hold the doors together and
bind each door directly into the roof and floor.
Integrating the frame components helps dissipate
crash energy through the vehicle’s structure.
Other standard passive systems on the RX-8
include front airbags, seat-mounted side-impact
airbags and side-curtain airbags. Additionally, the
front end and engine bay have ample crumple zones,
the front seats are designed to reduce whiplash
injuries, the brake pedal is designed to break away
in the event of a collision of sufficient force to
protect feet and legs and all four seating positions
are fitted with three-point seatbelts. Even
pedestrian protection was considered, as the RX-8 is
fitted with Mazda’s "shock-cone" hood design that
yields more to the impact of a pedestrian onto the
hood than a standard design, yet is strong enough to
not deform in normal use.
TRIM AND WARRANTY
Four trim packages are available for both
automatic and manual transmission RX-8s: a Standard
Model, a Sport Package (adds HID headlights, fog
lamps and DSC to M/T cars; adds 18-inch wheels, a
limited-slip differential, sport-tuned suspension
and larger front disc brakes to these items for
Sport A/T cars), a Touring Package (adds moonroof,
auto dimming mirror with Homelink® and Bose® audio
system with 6-disc auto changer to the Sport Package
offerings) and a Grand Touring Package (adds
power-adjustable driver’s seat with lumbar support,
leather seating surfaces with the option of Sand
leather trim — heated in front — and heated outside
mirrors to the Touring and Sport Packages). A
DVD-driven satellite-navigation unit is available as
a stand-alone option and uses a single DVD for
mapping the entire United States and portions of
Canada.
All 2007 Mazdas come with a roadside assistance
program. With a call to a toll-free number, owners
can access roadside assistance 24 hours a day, 365
days a year
throughout the United States and Canada. In
addition, a comprehensive three-year/36,000-mile
warranty covers every part on the vehicle except
those subject to normal wear. Also, all 2007 models
receive a five-year/60,000 mile powertrain warranty
and a five-year/unlimited-mileage corrosion
warranty.
Headquartered in Irvine, Calif., Mazda North
American Operations oversees the sales, marketing,
parts and customer service support of Mazda vehicles
in the United States, Canada and Mexico through
nearly 900 dealers. Operations in Canada are managed
by Mazda Canada, Inc., located in Ontario, Canada,
and in Mexico by Mazda Motor de Mexico in Mexico
City.