Mazda5 1.6 DIESEL 2011

30 January 2011

The new Mazda5 has just been introduced and is already a big hit with European customers, especially those with active lifestyles who drive a lot. Mazda now completes its new C-MAV line-up with a 1.6-litre common-rail diesel version. With this engine under the bonnet, the new Mazda5 lineup offers customers a powerful, small-displacement turbo diesel that is frugal, affordable and fun to drive. When developing the new diesel version Mazda engineers set their priorities, always keeping an eye on two key values for this new model: First, class leading, low CO2 emission levels combined with low fuel consumption and second, a sporty and powerful driving feel.

“For the engine line-up of the new Mazda5, we placed emphasis on environmental performance and fuel economy. This aim led us to use Mazda’s 2.0-litre direct-injection petrol engine with i-stop, and to replace the 2.0-litre diesel engine with a newly developed 1.6-litre turbo diesel unit that leads the class in low CO2 emission levels.”

Because the 1.6-litre common-rail engine is smaller-displacement, has an aluminium-alloy block and a 8-valve single camshaft (SOHC) layout, and is mated to a compact and lightweight transmission, the new Mazda5 1.6 Diesel is 120 kg lighter than the powertrain it replaces, which contributes to lower fuel consumption. It is also highly efficient. Engineers optimized the mechanical parts of the 8-valve SOHC for low friction, and employed highly-efficient Piezo injectors, all of which contribute to superior combustion efficiency. As a result, the new Mazda5 1.6-litre diesel produces 5 PS more power than the 2.0-litre diesel standard power version it replaces, while using 14.8 percent less fuel and producing 13.2 percent less CO2. It will appeal especially to customers with active lifestyles looking for a flexible, do-it-all small van with affordable operating costs and superior emission performance.

The new Mazda5 1.6 Diesel is a lightweight, smooth-running engine with power output and torque that ensures comfortable driving and easy controllability. Despite being smaller than the larger 2.0-litre diesel it replaces, it produces more output and delivers a wider maximum torque range for elasticity whenever it’s needed. It’s also clean-running and sustainable, producing just 138 g/km of CO2, which is a reduction of 13.2 percent.

Lighter, more Fuel-Efficient and Quieter
Not only is the new diesel cleaner, it is also lighter than the engine it replaces thanks to its compact size, aluminium block and 8-valve SOHC layout, with big benefits for fuel consumption. Overall, the Mazda5 1.6 Diesel is 120 kg lighter, and uses 14.8 percent less fuel (5.2 litres per 100 km) than the standard power 2.0-litre diesel it replaces. Of course, the Mazda5 1.6-litre diesel achieves Euro V compliance. It does this in various ways, for example by using a low compression ratio of only 16:1 — which lowers the combustion temperature — and a highly-efficient exhaust gas recirculation (EGR) cooler and EGR cooler bypass system. This enables the engine to warm up faster and reach peak combustion efficiency quicker when cold.

This 8-valve SOHC layout is also less complicated with fewer moving parts than a DOHC system, which means that valve train friction could be reduced even further, and NVH performance of the MZ-CD 1.6 engine optimized. This included enhancing the precision of the injection system by employing new Piezo injectors that inject fuel at up to 1,600 bar. These injectors allow more precise injection control and multipilot injection to realize smoother combustion. These features – coupled to the new Mazda5’s already extensive sound insulation measures – result in a smooth-running diesel van that is comfortable to drive in every situation.

New Turbocharger, Higher Output
The variable-geometry turbocharger (VGT) helps the engine make maximum torque of 270 Nm available in a wider torque range (between 1,750 and 2,500 rpm) for improved day-to-day driving. The maximum output of 85 kW/115 PS at as low as 3,600 rpm supports a dynamic yet comfortable and easy-to-control performance feel; and allows Mazda5 to reach a top speed of 180 km/h in sixth gear.

Clean-Running Maintenance-Free DPF
Mazda5’s new diesel also introduces a new maintenance-free diesel particulate filter (DPF) system. The new 1.6-litre diesel uses an oxidation catalyst to increase the exhaust gas temperature and improve particulate combustion. This is user-friendly and also reduces costs for the customer.

The new Mazda5 introduced a completely new exterior that employs Nagare-flow design, the new Mazda front face, a “hidden” D-pillar and new horizontal rear lamps for an appeal that is unique to the C-MAV segment. On the inside, Mazda5 has a new dashboard, steering wheel and centre stack, along with new seats, materials, colours and seat fabrics for enhanced quality feel.

Family-Friendly Practicality, Storage and Comfort
The new Mazda5’s double sliding rear doors that can be opened automatically* or manually, and one of the largest rear door openings in the segment, enable easier access and exit than the competition. The Mazda5 has room for up to seven people and its seats can be easily folded for a variety of seat configurations, including Mazda’s unique Karakuri seat-folding functionality. It has a high amount of storage possibilities including an eight litre sub-trunk box*, six cupholders, two bottle holders and an 11- litre glove box. There are also two popup tables with cupholders in the back of the front seats.
The cabin of the new Mazda5 is a comfortable place to be, offering one of the most generous 2nd and 3rd row leg rooms in the C-MAV segment. The front section of the driver and passenger seat centre arm rest is 15 mm wider, and the 2nd row seats can be adjusted to a maximum recline angle of 50º and slide-adjusted by up to 270 mm. The floor is raised toward the back of the vehicle to give the back two rows a clear view ahead and diagonally. The air vents for the new Mazda5 are now placed higher than on the previous generation, which improves comfort in the cabin on cold or hot days and the rear passengers benefit from air vents placed under the front seats. And last but not least, the cabin is now quieter and more comfortable at higher speeds with wind noise reduced by 10 percent, lowered suspension vibration, intake noise and new foam insulation.

Powertrain Line-up with new Mazda i-stop
Mazda’s new C-MAV has an engine line-up that focuses on Zoom-Zoom driving fun coupled to low consumption and emissions. Besides the MZ-CD 1.6 diesel, there are two petrol engines available, both with smooth, precise-shifting six-speed transmissions. Topping the range is the MZR 2.0 DISI petrol engine with direct-injection and i-stop, Mazda’s stop/start technology that offers great performance coupled to double-digit reductions in fuel consumption and CO2 emissions. It produces 110kW/150 PS of maximum power at 6,200 rpm and 191 Nm of maximum torque at 4,500 rpm with a top speed of 194 km/h. Despite all this power, it uses 13 percent less fuel (6.9 litres per 100 km) and produces 15 percent less CO2 (159 g/100 km) than the naturally-aspirated 2.0-litre petrol it replaced.

This engine is joined by an updated version of the popular MZR 1.8 petrol engine with a maximum output of 85 kW/115 PS at 5,300 rpm and a maximum torque of 165 Nm at 4,000 rpm. It is newly mated to the six-speed manual transmission with a longer gear ratio, which helps the engine lower fuel consumption by 4 percent only (7.2 litres per 100 km), CO2 emissions by 6 percent (168 g/km), and complies with Euro V.

Chassis
When developing the new model, Mazda focused on achieving a “Harmonized Dynamic Driving Feel” (named ‘Toitsu-Kan’) and the result is exceptional linearity, whether accelerating, turning or stopping that provides both driver and passengers with a pleasant ride feel. Furthermore, the new Mazda5 is designed with more high and ultra high-tensile steel reinforcements to be lighter, stiffer and more crash-resistant than its predecessor. Engineers added new suspension, steering and aerodynamic components that deliver a more linear steering feel for more control and predictability. These chassis updates are especially beneficial when combined with the updated 1.6 diesel version of the new Mazda5, which is 120 kg lighter than the 2.0-litre diesel it replaces with handling attributes that make it both agile and easy to control.

Improved Body and Suspension Stiffness for More Control
Chassis engineers improved local stiffness at locations where it makes controlling the vehicle easier. They enlarged the cross-sectional profiles for the D-pillars, the upper part of the liftgate, and the corner radius of the liftgate opening, which lowers liftgate opening displacement by 17 percent when compared to the previous Mazda5. Additional spot welds were added to the apron section of the front damper tops and at the base of the B-pillars, and a closed-section structure was adopted for the rear pillars to increase rigidity at belt-line level.

The suspension layout for the new Mazda5 employs MacPherson struts in the front and a multi-link suspension in the rear, twintube dampers in the front and separate coils and monotube dampers with integrated rebound springs at the back. To realize a linear driving feel, engineers introduced new rubber couplings to the steering shaft joint section and stabilizer mounts, modified the dampers and bushings for both the front and rear suspension, and increased all spring rates. These efforts deliver a smoother response during acceleration, deceleration and when cornering, and improve straight-line stability when driving at motorway speeds.

New Aerodynamic Design
The new front end design of the Mazda5 not only sets it apart from other vans, it also contributes to aerodynamic performance that is unusually good for a C-MAV. A new front lip spoiler, a flat engine undercover and front tyre deflectors work together to channel the air under the vehicle efficiently, which helps keep fuel consumption down. The design of the vehicle is also optimised to improve lift balance at the front and back. These measures give the new Mazda5 a drag coefficient of just 0.30, one of the lowest in the C-MAV segment.

Passive and Active Safety
The new Mazda5 includes a generous standard safety package, including six airbags – front, side and curtain – and active safety features including large 300 mm ventilated disc brakes in the front (278 mm for 15-inch wheels) and 302 mm rear brakes (280 mm for 15-inch wheels), four-channel ABS, electric brake-force distribution (EBD), brake assist, traction control (TCS) and DSC; and an Emergency Stop Signal (ESS) that warns the cars behind of a sudden braking manoeuvre by automatically flashing the hazard lights rapidly. With the 17-inch wheels, a tyre pressure monitoring system (TPMS) is standard as well. A further enhancement to the Mazda5 safety is the first-ever employment of Mazda’s Brake Override System, which always prioritizes the brake pedal over the accelerator pedal should both be engaged simultaneously, allowing the vehicle to be brought to a safe stop.

Using Mazda5’s two electric sliding back doors* is now even safer with the introduction of a new, highly sensitive touch-sensor strip, running the length of the door, that automatically and dependably returns the door if obstructed. A park-assist system is also available with four sensors in the rear bumper that continuously measure the distance to any object when parking in reverse.

Equipment
The new Mazda5 is loaded with equipment that makes the trip fun and easy. It can be equipped, for instance, with an affordable, integrated navigation system as an option that delivers 99 percent coverage of Europe’s major markets. It has 4 GB memory and 18 languages, a large 14.7 cm touch screen monitor, and a hands-free Bluetooth® telephone and audio connection with external microphone. This equipment package also comes with an integrated CD player + radio that includes iPod®, iPhone® (via optional connector cable) and MP3 CD capability, and steering-wheel controls.

The standard equipment package features power-adjustable side mirrors, manual air conditioning, driver seat height adjustment, power windows front and back with one-touch driver window operation, and power door locks. Also standard is a new four-speaker radio system with digital signal processor (DSP) technology that reduces unwanted radio noise, and a double tuner (exclusively for Europe) that ensures clear radio reception. It also has a FIX-EQ audio system that automatically optimises sound characteristics according to the interior space, steering-wheel audio control, and an AUX jack that allows you to play MP3 players using the car’s audio system.

Available are rear parking sensors, seat heating, an in-dash 6 CD changer, Bluetooth® audio functionality for playing an MP3 player, a Bluetooth® telephone system with voice recognition and upgraded steering wheel control and Xenon headlamps – among many other features.

Claudia Tallone