>>> engines

The new station wagon version offers a broad and diverse range of power units to enable all customers to find a Fiat Stilo Multi Wagon with performance and fuel consumption levels most appropriate to their needs. The range includes two petrol and two Common Rail turbodiesels that range from 59 to 98 kW (80-133 bhp) and display different attributes, all exploited to the full by the 5-speed gearboxes.

The various benefits of these four engines include generosity, sparkling performance, high performance and sophisticated technology. All engines share common traits of great reliability and respect for the environment.

103 bhp 1.6 16v

The (103 bhp) 1.6 16v unit has undergone structural changes to lengthen stroke and reduce bore. The result is lower fuel consumption, increased torque and lower weight.

The improved thermodynamic efficiency (with the attendant fuel economy) is due, in particular, to a more compact combustion chamber, pistons that are 20% lighter and lower timing system friction: each valve now comes with one spring instead of two. Combustion efficiency, on the other hand, has been improved by adopting a longer stroke that allows improved performance in general and increased torque at low speeds in particular (maximum torque is 145 Nm at 4000 rpm). Driving flexibility can only benefit. Power unit weight is also reduced by 4 kg through changes to the following: crankshaft, pistons, crankcase, mountings and auxiliary components. The new flexible belt that drives the compressor makes the tensioner superfluous and ensures the component lasts as long as the engine itself. 

The 1.6 16v 76 kW (103 bhp) engine also adopts a drive by wire electronic engine control device, that allows: a smoother drive, lower fuel consumption and lower emissions. Pencil coils also do away with the need for HT leads, reduce weight while ensuring the spark plugs last longer, more energy is available, cold starts are improved and on-board equipment is subject to less interference.

The 76 kW (103 bhp) 1.6 16v unit comes with a catalytic converter with high chamber density located in the engine bay that is active even when the engine is warming up.
 

Cylinder capacity: cc 1596 Maximum power output: kW (bhp) at rpm 76 (103)/5750 Maximum torque: Nm (kgm) at rpm 145 (14.8)/4000 Top speed: km/h 183 Acceleration 0-100 km/h: seconds 11.4 Acceleration 0-1000 m: seconds 34.0 Fuel consumption: litres/100 km - urban cycle 10.5 - extra-urban cycle 5.9 - combined cycle 7.6

133 bhp 1.8 16v

The 1.8 16v power unit offers entirely respectable performance with a power output of 98 kW (133 bhp) and torque of 16.5 kgm. This engine propels the Fiat Stilo Multi Wagon to a top speed of 200 km/h and allows the car to accelerate from 0 to 100 km/h in 10.8 seconds. These results have been achieved through a series of improvements to boost mechanical efficiency (lighter drive components and adoption of a steel cylinder head gasket), reduce weight (some 3 kg less), decrease noise levels and reduce vibrations (the engine centre of gravity displacement has been reduced by some 10% by adopting a lighter piston). 

The engine comes with a drive by wire throttle control. One reason it feels so flexible and satisfying to drive is a delivery curve that makes 90% of torque available at just 1800 rpm and stretches to over 6000 rpm. The credit also goes to certain technical solutions such as the sporty exhaust (close-coupled) and a variable geometry intake system.
 

Cylinder capacity: cc 1747 Maximum power output: kW (bhp) at rpm 98 (133)/6400 Maximum torque: Nm (kgm) at rpm 162 (16.5)/3500 Top speed: km/h 200 Acceleration 0-100 km/h: seconds 10.8 Acceleration 0-1000 m: seconds 31.0 Fuel consumption: litres/100 km - urban cycle 11.7 - extra-urban cycle 6.3 - combined cycle 8.3

1.9 JTD 80 bhp

The 59 kW (80 bhp) 1.9 JTD unit is the same as the 85 kW (115 bhp) unit from the viewpoint of architecture and operation. The only differences are that this unit lacks an intercooler and is fitted with a fixed geometry turbine instead of a variable geometry unit. It delivers 59 kW (80 bhp), available at just 4000 rpm, and a torque of 20 kgm at 1500 rpm. 
 

Cylinder capacity: cc 1910 Maximum power output: kW (bhp) at rpm 59 (80)/4000 Maximum torque: Nm (kgm) at rpm 196 (20)/1500 Top speed: km/h 170 Acceleration 0-100 km/h: seconds 13.8 Acceleration 0-1000 m: seconds 36.0 Fuel consumption: litres/100 km - urban cycle 7.5 - extra-urban cycle 4.6 - combined cycle 5.6

1.9 JTD 115 bhp

This power unit is a development of the tried and tested Fiat Auto Common Rail turbodiesel family. Certain refinements have been made to the original reliable, successful mechanical configuration to improve general engine behaviour and achieve high performance, low specific fuel consumption and even more effective emission control.

Turbocharging, for example, is managed by a new-generation variable-geometry turbocharger. This unit benefits from being able to regulate the exhaust gas flow through a moving vane distributor (variable geometry) that optimises turbine operation at all times to ensure high engine flexibility at low speeds and a simultaneous increase in power and torque. These attributes are complemented by the familiar benefits of the Unijet Common Rail injection system. 
 

Cylinder capacity: cc 1910 Maximum power output: kW (bhp) at rpm 85 (115)/4000 Maximum torque: Nm (kgm) at rpm 255 (26)/2000 Top speed: km/h 190 Acceleration 0-100 km/h: seconds 11.2 Acceleration 0-1000 m: seconds 33.0 Fuel consumption: litres/100 km - urban cycle 7.5 - extra-urban cycle 4.6 - combined cycle 5.6

>>> gearboxes

The new car comes with cutting-edge gearboxes for driving satisfaction and comfort.
Details of engine/gearbox matches are shown below:

- 5-speed gearbox for the 1.6 16v engine
- 5-speed gearbox for the 1.8 16v engine
- 5-speed gearbox for the 1.9 JTD 80 bhp engine
- 5-speed Getrag gearbox for the 1.9 JTD 115 bhp

All the gearboxes share a dual cable external mechanism that ensures slick manoeuvres and noiselessness without transmitting mechanical vibrations through the linkage. 

All versions also come with a hydraulic clutch release: with external actuator for the 1.6 16v and coaxial actuator (Csc) for other power units. The device comes without exterior actuators to increase system efficiency during the car's lifetime and also insulate effectively against noise and vibrations from the engine. 

The quality and reliability of these components is also guaranteed by the great care taken at the assembly stage, when each component is pre-tested and electronic measurements are carried out on the parameters that define efficiency, flexibility and clearance. 

5-speed gearbox for the 1.6 16v

Increased acoustic comfort, lower shift effort even when cold and greater gear engagement precision. These are the benefits offered to the motorist by the C514 gearbox (transverse configuration with two shafts in a cascade and differential) that underwent improvements to the following parts before fitting to the Fiat Stilo Multi Wagon: gears, synchronisers, lubrication, inner gear linkage and clutch control. Due to the addition of a selection travel limiter, the gear mechanism safeguards against involuntary engagement of reverse and makes the fifth speed easier to find. 

On the five-speed version fitted to the Torque 1.6 16v engine, the use of top-quality gear material and a fully redesigned differential allowed the gearbox to be upgraded: this configuration can transmit up to 15 kgm of torque. 

Noteworthy technical features include: the gear casing and clutch casing have been optimised in terms of lightness and noise absorption though FEM (Finite Element Method) computing techniques. Baulk-ring Borg-Warner type synchronisers are also fitted to all speeds. The first and second gears, i.e. those most commonly used by motorists, come with dual cone synchronisers that require 40% lower engagement effort than a conventional single-cone type. 

The internal gear control system is on four selection planes with a central positioner and runs on bearings. Lubrication is dynamic, with oil flows channelled through holes in the casings. The advantages include: lower wear and higher efficiency during torque transmission and low temperature manoeuvrability.

5-speed gearbox fitted to the 1.8 16v and 80 bhp 1.9 JTD engine

This gearbox (the C510) offers outstanding manoeuvrability and very low noise levels. The configuration is transverse with two shafts in a cascade and a differential. In this case too, the gearbox has been optimised through the adoption of a double-cone first and second speed synchroniser and a high-efficiency reverse engagement. These two improvements ensure the product outstanding manoeuvrability. Lubrication is again dynamic, with the oil channelled through holes in the casings and shafts.
The maximum torque level that can be transmitted is 21 kgm.

5-speed gearbox fitted to the 115 bhp 1.9 JTD engine

This new gearbox, developed by Getrag and optimised for the Fiat Stilo, is now also available on the Fiat Stilo Multi Wagon. In this case too, the aim of the engineers was to improve acoustic comfort, eliminate selection lever vibration or judder and also reduce operation and engagement effort even when cold. The gearbox (featuring three shafts and an internal differential) features reduced axial dimensions, outstanding manoeuvrability in all gears and ultra-low noise levels. Credit for this is partly due to the innovative solutions described for previous gearboxes, such as baulk-ring synchronisation, dual cone synchronisers on the first and second gears and dynamic lubrication. The maximum transmissible torque is 26 kgm due to these and other construction features.

>>> suspension

The suspension on the Fiat Stilo Multi Wagon offers performance comparable to that of higher category cars and ensures great driving ease and precision, outstanding roadholding and the best possible standard of passenger comfort. The two efficient, tried and tested layouts used on the car work very effectively due to the attributes of the new chassis.

The front displays an independent MacPherson strut configuration refined through the adoption of: 

- new-design coil springs; 
- wishbones with front and rear bushes in rubber and metal; 
- beam mechanically designed to accept the new arms and equipped with body attachments that are stiffer at the front and more flexible at the rear; 
- split bracing blocks with stiffer body attachments (the cup is welded, not bolted). 

The rear configuration is an interconnected wheel suspension with a torsion beam, a solution already adopted on higher category cars. This option combines the traditional advantages of a simple, rational layout in terms of weight and bulk with improved comfort and handling. This solution offers driver and passengers: 

- greater comfort because the passenger compartment admits less noise and fewer vibrations. The bushes attaching the axle to the body (also developed specially for the Fiat Stilo) are hydraulic and the damper position is angled; 
- improved handling because the folded steel twisting beam assures the suspension ideal torsional stiffness and thus an optimum balance between vehicle front and rear for optimised weight distribution. Structural stiffness has been increased by adding an antiroll bar that is very light due to its hollow cross section; 
- greater driving stability due to hydraulic bushes at the point where the axle is attached to the body. On corners, these create a toe-in effect at the wheels for optimum driving stability even under difficult conditions. They also offer great longitudinal flexibility for maximum filtering of noise and vibrations while in motion.