The briefing for Mazda designers left no doubt: "Remain true to
the basic design principles of the third-generation MX-5, while
creating a new roadster coupe with its own, exciting identity."
The third-generation MX-5 further enhanced the design of Mazda's
roadster icon. For the new Roadster Coupe, this same silhouette
with a low, flowing shoulder line, was retained. The same goes for
the car's overall proportions, with slight changes undertaken at
the rear of the car. It is here that many coupes with power
retractable hard top roofs gain in size, resulting in a significant
rear overhang.
In contrast to this common design issue, the MX-5 Roadster
Coupe's proportions are harmonious. This was achieved with a design
that emphasizes the MX-5 Roadster Coupe's open-top character. In
essence, the MX-5 Roadster Coupe's design starting point was the
Mazda MX-5 soft top, not a redesigned coupe. The windshield, entire
front end, small quarter windows, beltline and other elements of
the Roadster Coupe's front and side panels are carried over from
the soft top model.
Only the back of the new MX-5 Roadster Coupe, where the Power
Retractable Hard Top is stowed, were slight, but subtle changes
necessary in the area of the rear fenders and the rear deck. For
example, the front edge of the rear deck lid is 40 mm higher than
the soft top at this location. In order to realize a flowing,
harmonious form at the back, designers raised the trailing edge of
the boot lid by about 20 mm. The result: the rear end of the MX-5
Roadster Coupe falls softly, rather than abruptly. Nonetheless, the
overall design seems more tapered and solid-looking compared to the
soft top model.
Visual Balance Achieved by More Prominent Wheel
Arches
The higher rear end does not diminish MX-5 Roadster Coupe's low,
sports car road stance, because designers employed more prominently
contoured rear wheel arches for visual balance. These contribute to
the impression of power and make the Roadster Coupe seem to crouch
on the road.
Innovative Power Retractable Hard Top
Mazda MX-5 Roadster Coupe's power retractable hard top delivers
packaging ingenuity. It retracts into such a compact space that,
with the top down, the 150-litre boot volume of the soft top
remains untouched.
Like the soft top MX-5, the driver must first release the centre
lock located in the middle of the front roof section.
Two Buttons on the Centre Stack Operate the Hard
Top
Changes to the interior are few with the addition of two buttons
designed to open and close the retractable hard top, each are
located on either side of the hazard-warning button in the upper
section of the dashboard centre stack. There is also an indicator
lamp that illuminates to warn the driver if the roof does not
completely lock into place upon closing. The full 12 second open or
close cycle is accompanied by a beep to let the driver know that
the roof mechanism has finished. This manoeuvre has to be done
while the car is standing still.
The retractable hard top was developed in-house by Mazda with
the help of Webasto Japan and consists of three moving sections and
the rear deck cover, which is also a moving element.
A total of four roof motors - two on each side of the vehicle -
facilitate the electro-hydraulic metamorphosis of the car from
coupe to open-top roadster and back again. Before opening or
closing the hard top, the windows (if in the up position) are
automatically lowered by approximately 100 mm to make sure there is
enough room for the roof to fold back unimpeded.
Innovative Plastic Composite Material used for the Hard
Top
In its efforts to keep additional weight for the hard top version
as low as possible, Mazda used two different kinds of materials,
sheet moulding compound (SMC) for the outer panels and glass
fibre-reinforced polypropylene (GFPP) for the inner panels of the
retractable roof.
SMC material is a fibre/plastic composite material with high
rigidity and heat resistance and, to the joy of the designers, is
easily formable into shapes that would never be possible with steel
or aluminium. And SMC's smooth surface structure gives an excellent
paint finish, which contributes to high levels of build quality and
craftsmanship. GFPP combines the virtues of low weight and high
strength. This material allowed the inner panels to have a dimpled
surface, which looks so good it doesn't need to be painted. For
these reasons, Mazda engineers could do without a moulded roof
liner - the combination of SMC and GFPP makes the MX-5 Roadster
Coupe's hard top just 20 mm thick.
The Power Retractable Hard Top Weighs just 18 kg more
than the Soft Top
These materials also ensure that the hard top structure is light
and compact. The roof itself (not including rear deck cover) weighs
only 18 kg more than the soft top of the Mazda MX-5.
Using plastic material for the lightweight hard top gave
designers freedom to create the right shape. Its glass window with
a printed heating element could be made larger than that of the
soft top MX-5 to ensure a good rear view. When the top is closed,
the MX-5 Roadster Coupe is only 10 mm higher than the soft top
model; while width, length, wheelbase and track remain
identical.
Another goal of development was to make the hard top as compact
and stylish as possible. Its tautly curved shape makes the
passenger compartment seem compact. To prevent the roof from
seeming too upright, relatively slim B-pillar designs were
employed. Added to this is a contoured edge on both sides of the
roof, which optically unifies the front and middle sections of the
roof.
The powered hard top also cuts cabin noise on the highway and
reduces unwanted traffic noise seeping into the cabin during city
driving.
High-Mounted Brake Light with a White instead of Red
Lens
A new design accent is created by the MX-5 Roadster Coupe's
high-mount brake light. It is placed further forward than that of
the soft top model, is thinner and uses a white lens instead of a
red one. The rear combination lights and rear bumper are identical
with those of the soft top version.
The new Mazda MX-5 Roadster Coupe will be offered with seven
exterior colours, including two all new colours - Stormy Blue Mica
and Highland Green Mica. These new colours deliver exciting
contrasts in different light conditions.
These new colours are also available on the soft top models.
The new Roadster Coupe will be offered with leather trim which
is available in black or saddle tan.
Premium Technology - iPod-Compatible Audio
System
A new iPod accessory is also available in the Mazda MX-5 Roadster
Coupe, which is a world first for an volume-selling car
manufacturer. The system is able to play MP3 music files from an
iPod using the normal audio controls of the car. For installing the
iPod, there is a special jack on the passenger side in the glove
compartment.
This feature is also available on soft top MX-5 models.