The smart engineers have improved the successful cdi engine from the
predecessor model and equipped it for the future. The power and torque have
each increased by ten percent, whilst the fuel consumption has decreased by
around 13 percent. In figures this means power of 33 kW/45 bhp and maximum
torque of 110 metres that is delivered between 2,000 and 2,500 rpm. The new
smart fortwo cdi thus offers a combination of agility, economy and
environmental compatibility that is unique in this class and that adds up to
all-round driving fun.

This is thanks to the world’s smallest direct-injection diesel engine – a
masterpiece of engine development – that boasts technology previously only
found in larger capacity engines, despite its extremely compact dimensions.
For example the latest generation common-rail direct injection which builds
up high injection pressure of up to 1,600 bar (previously: 1,350 bar) even
at low revs, and injects the fuel into the combustion chambers with newly
developed six-hole injectors, enabling an even more efficient combustion
process.

A turbo-charger, charge-air cooling, electrically controlled and cooled
exhaust gas recirculation, hydraulic compensation of valve clearance and a
state-of-the-art light alloy construction are further features that identify
the cdi engine as a high-tech package.

The smallest direct-injection diesel engine with state-of-the-art
technology

The three-cylinder engine has also adopted two-phase fuel injection from the
CDI engines of its sister brand Mercedes-Benz. A few milliseconds before the
main injection a small quantity of diesel is injected into the combustion
chambers where it ignites and preheats the cylinders. This results in a
noticeably quieter combustion noise level than an engine without this pilot
injection. The electronic "brain" of the cdi engine – a high-performance
micro-computer that controls the whole engine-transmission system –
calculates how much fuel is needed and the interval at which pilot injection
and main injection take place.

The most important data on the new smart fortwo cdi at a glance:

*NEDC

 

The quick response of the cdi engine is first and foremost thanks to the
compact yet extremely effective turbocharger that is housed in the exhaust
manifold. Its compressor wheel has a diameter of just 31 millimetres, yet it
rotates at up to 290,000 rpm and builds up maximum charge pressure of
approximately 1,150 millibars. This gives the three-cylinder engine more air
to "breathe" and enables it to develop impressive torque: 85 metres are
available even from 1,500 rpm – more than three quarters of the maximum
torque.

This torque curve plays an important part in the fun behind the wheel that
drivers experience with every kilometre driven in a smart fortwo cdi. The
smart fortwo cdi accelerates from 0-100 km/h in 19.8 seconds and reaches a
top speed of 135 km/h.

As before, the engines of the smart fortwo are fitted transversally in
space-saving mode in front of the rear axle and they are inclined at an
angle of 45 degrees towards the rear. The consistent use of lightweight
materials means that the diesel engine weighs in at just 86 kilograms. The
crankcase features a state-of-the-art diecast aluminium bedplate design and
the cylinder head and cylinder head cover are likewise made of aluminium.

Exhaust gas recirculation, catalytic converter and particle filter
as standard

The three-cylinder diesel engine controls emissions in two stages. The
high-tech common-rail injection and the extremely efficient combustion
process inside the engine provide for a low level of untreated emissions.
Depending on the driving situation and the engine load, up to 60 percent of
the previously cooled exhaust gas is returned to the combustion chambers
where it is combusted once again thus greatly reducing nitrogen oxide
emissions. The exhaust gas recirculation works with an electropneumatic
actuator which enables it to react quickly to changes. An oxidation
catalytic converter and an open diesel particle filter are responsible for
the aftertreatment of the exhaust gases. These are housed together with the
exhaust silencer in a stainless steel case.

Automated manual transmission with kick-down function

The three-cylinder diesel engine works with a newly developed automated
manual five-speed transmission which the driver operates by briefly tapping
the shift lever on the centre console. When briefly pushed forwards the
transmission shifts to the next highest gear. Gently pulling the shift lever
backwards is sufficient to shift down. Shift paddles on the steering wheel
are optionally available and come as standard in the pulse model line. An
automatic transmission mode is also available for all equipment variants.
This is a standard feature for the passion model.

The clutch is opened and closed by an electric motor which means that there
is no clutch pedal in the new smart fortwo cdi. To enable quick intermediate
spurts the smart engineers have developed a kick-down function that is
activated with the accelerator pedal. This enables the driver to
spontaneously change down by one or two gears and to make even better use of
the engine’s low-speed torque.

One of the safest cars in its class

It is not just the three-cylinder diesel engine that is unique feature in
this vehicle class; the new smart fortwo cdi also boasts other technical
innovations as standard. For example: the anti-lock braking system (ABS)
with electronic brake-force distribution, the electronic stability programme
(ESP®), brake assist, full-size airbags for driver and passenger, seat belts
with belt tensioners and belt-force limiters, safety seats with integral
seat belts and the sturdy tridion safety cell of which 50 percent consists
of high-strength steel alloys and that has proved itself in the toughest
crash tests.

This extensive safety equipment makes the new smart fortwo one of the safest
cars in its class.

The body is 195 millimetres and the wheelbase 55 millimetres longer than
that of the predecessor. This, together with the wider track (front: 7
millimetres; rear: 33 millimetres) greatly enhance the ride comfort and
spaciousness. The luggage compartment capacity has increased from 150 to 220
litres or even from 260 to 340 litres when loaded to the roof (in accordance
with the VDA measuring method). This means that six drinks crates fit into
the luggage compartment of the new smart fortwo. The level loading area and
the twin-section tailgate facilitate loading and unloading.

The new smart fortwo cdi is available as a coupe and a cabrio. The prices
range from € 11,200 to € 16,240 in (ex works) depending on the model and the
equipment variant.

The standard equipment of the smart fortwo cdi

 

Exterior

– H7 projection headlamps

– Third brake light

– White side indicators

Functional/electrical equipment

– Automated manual five-speed transmission with kick-down function
– Instrument cluster with multifunctional display
– Digital gear display with gear recommendation
– External temperature indicator with frost warning
– Indicators with lane-changer function
– Windscreen wipers with speed-sensitive interval wiping and wipe/wash
function – Heated rear window
– Tank cap integrated in the central locking system
– 12 volt socket on centre console
– Central locking with radio remote control and immobiliser
– Diesel particle filter (open system, closed system from 2008)
– Electric soft top (smart fortwo cabrio)

Interior

– Passenger seat can be fully folded forwards (single hand operation)
– Storage compartment on passenger side, next to steering wheel and in the
doors
– Coin holder (smart fortwo coupe)
– Mirror in driver’s sun visor
– Storage compartment in tailgate

Safety

– tridion safety cell
– Crash-absorbing elements at front and rear
– Crash sensor to activate hazard warning lights
– Full-size driver and passenger airbag
– Safety seats with integral seat belts
– Belt tensioner and belt-force limiter
– Drive lock, automatic door locking when the vehicle is in motion
– ESP® – ABS with electronic brake-force distribution
– Hydraulic brake assist

pure equipment line

 

The pure entry-level variant comes with everything that makes a smart a
smart. The exterior of the pure is characterized by a black grooved plastic
roof and steel rims. Its tridion safety cell is painted black. In the
interior different surfaces and colours largely distinguish the basic
version from the sporty pulse and the elegant and extensively equipped
passion. The lower part of the instrument panel (knee pad) and the door trim
are made of grained black plastic. The two-spoke steering wheel is a further
feature of the pure, as are its mechanical window winders.

pulse equipment line

The name stands for sportiness. The pulse also features a black tridion
safety cell, however this is optionally available in silver. Its six-spoke
alloy wheels with wide tyres (175/55 R 15 at front, 195/50 R 15 at rear)
give it a beefy appearance. The interior of the pulse features an upholstery
colour exclusively available for this model and matching fabric elements for
the instrument panel, knee pads and door trim that create a pleasant homely
atmosphere. A glance upwards reveals the sky through a new panoramic roof
made of polycarbonate. A black blind provides sun protection. The sporty
character is emphasized by the rev counter and clock and a three-spoke
leather steering wheel including steering wheel gearshift. Further standard
features include electric windows and fog lights.

passion equipment line

The elegant and extensively equipped passion can always be identified by its
silver tridion cell. The door mirrors and radiator grille are also painted
silver. Further features include a panoramic roof made of polycarbonate and
twelve-spoke alloy wheels (front tyres 155/65 R 15, rear tyres 175/60 R 15).
Like the pulse, the fabric elements on the instrument panel, knee pad and
door trim match the colour of the upholstery. Three different colours with a
special fabric design are available. Further standard equipment includes air
conditioning with tem perature control, a leather sports steering wheel and
the automatic gear programme softouch. Like the pulse the passion also has
electric windows and in addition it comes with a luggage compartment cover
including a net bag.

Options

– tridion safety cell in silver (optional for pulse, standard for passion)
– Panoramic roof made from polycarbonate, with sun blind (optional for pure,
standard for the pulse and passion)
– Leather seats including seat heating (optional for pulse and passion)
– Glove compartment, lockable
– Luggage compartment cover including net (standard for passion)
– Smoker’s kit
– 3-spoke leather steering wheel with steering wheel gearshift (incl.
leather gear knob) (standard for pulse, option for passion)
– Comfort/light package (electrically adjustable and heated door mirrors,
rain/light sensor, driveway illumination)
– softouch five speed transmission with automatic gear programme (optional
for pure and pulse, standard for passion)
– Electric power steering
– Air conditioning with automatic temperature control incl. dust and pollen
filter (optional for pure and pulse, standard for passion)
– Electric windows with comfort function (optional for pure)
– Electrically adjustable and heated door mirrors
– Heated seats
– Fog lights (optional for pure and passion, standard for pulse)
– Anti-theft alarm system
– Audio package: smart radio 9 (RDS radio CD, 2 loudspeakers), smart sound
system (two tweeters, two mid-range speakers, subwoofer, smart MP3
interface)
– Provision for radio installation (incl. rod aerial and 2 loudspeakers)
– smart radio 9 (RDS radio CD, two loudspeakers)
– smart radio 10 (RDS radio with CD changer for 6 CDs, MP3 compatible, incl.
two loudspeakers) – smart sound system – Portable smart navigation system
– Head/thorax side airbags
– Breakdown kit
– ISOFIX child seat fastener incl. manual airbag deactivation
– Nine-spoke 15 inch alloy wheels with 155/65 R 15 tyres at front, 175/60 R
15 tyres at rear (optional for pure and passion)
– Dashboard instruments (cockpit clock, rev counter)

 

smart fortwo cdi
Technical data

Engine

 

Power transmission

 

Running gear

 

Dimensions and weights

 

Performance

 

Fuel consumption
(l / 100 km) / diesel in acc. with NEDC