Standard rear heater ducts ensure rear seat passengers are equally as comfortable as those in the front. Locating the system's filter behind the glove box makes for easier maintenance which simply requires removal of the inner glove box to gain access.


Drivetrain

- New petrol engine marks debut of i-DSI (Dual and Sequential Ignition) technology
- Twin-plug and sequential ignition for intense combustion
- Exceptional combination of lively performance with low fuel consumption
- CO2 emissions of just 134 g/km (S and SE grades) and 137 g/km (SE Sport)
- EU2005 compliant
- Wide spread of torque for supreme driving flexibility
- Highly compact engine design contributes to Jazz's overall packaging
- 5-speed manual at launch, Honda CVT option with 7-speed semi-automatic shift control system available later

The outstanding qualities of the new Jazz are the result of many different elements and technological advances contributing to the package as a whole. But playing a fundamental role is the brand new petrol engine that delivers outstanding torque, exceptionally low CO2 emissions and an exceptional blend of performance and economy. .

The Dual & Sequential Ignition (i-DSI) engine is the latest member of Honda's new i-Series family and complements the i-VTEC engines of the Stream, Civic Type-R and new CR-V. Using a range of technologies to promote combustion efficiency - many taken from the highly frugal engine of Honda's petrol-electric hybrid, the Insight - the i-DSI engine has been designed to achieve the ultimate level of performance /economy within a highly compact package.

Rapid, intensive combustion is a key element of the design and the provision of a pair of spark plugs per cylinder, mounted diagonally opposite one another, and a high-swirl, highly compact combustion chamber - resulting from the narrow valve angle (30°) and SOHC single pivot head - are key elements in achieving this.

Each pair of spark plugs is fired sequentially with the interval between the two depending on engine rpm and load. The intake side spark plug ignites first, then as the flame propagates, the exhaust side plug is fired (before top-dead-centre); the flame expands rapidly into the whole area to achieve complete combustion. This arrangement provides much faster combustion and higher cylinder pressures to provide high engine output. The intense nature of the combustion effectively reduces engine knocking and permits a much higher compression ratio - 10.8:1 - for greater economy.

The programming of the ignition timing map achieves a careful balance between economy and power output. At large throttle openings, up to engine speeds of around 2600 rpm, intake side ignition is advanced and the exhaust side is slightly retarded; in the mid range the exhaust side is further retarded, optimising output; at high engine speeds, ignition is almost simultaneous for optimum power and torque. At part throttle, the simultaneous ignition phase is more extensive, commencing as low as 3500 rpm.


Top torque, effortless economy

This intelligently-controlled, intensive combustion delivers class leading levels of fuel economy, yet torque and power are improved across all engine speeds especially at low and mid speed ranges; the Jazz demonstrates a remarkably flat torque curve as a result. Peak power output is 83 PS (61 kW) at 5700 rpm, with maximum torque of 119 Nm delivered at 2800 rpm. Approximately 90 per cent of that torque is available between 2000 and 5000 rpm to achieve superb flexibility and lively performance.

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