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  1. #1
    Join Date
    Apr 2015

    Vauxhall Viva Power Train & Chassis Detailed Information


    • New 1.0-litre three-cylinder ECOTEC engine
    • Achieves 65.7mpg combined and 99g/km CO2
    • UK-developed chassis with benchmark comfort and safety

    After first appearing in the ADAM ROCKS AIR and subsequently the New Corsa and ADAM, VIVA is the latest Vauxhall to feature the new 1.0-litre three-cylinder ECOTEC engine.
    Specially-developed for VIVA and achieving up to 65.7mpg combined with CO2 emissions as low as 99g/km, this 75PS powertrain is smooth, punchy and efficient, and is mated to a slick five-speed transmission.
    The three-cylinder engine is made from light aluminium and has better running characteristics and noise emission than some four-cylinder units. Annoying vibrations that can be the trademark of some three-cylinder engines have been eliminated thanks to a number of measures:

    • Ground-up block design with key focus on resonance reduction
    • Integration of exhaust manifold into the cylinder head to further reduce noise
    • Sound-absorbing cam-cover
    • Timing chain ‘trimmed’ to reduce clatter (backward-leaning teeth in chain are friction-optimised and grip the spur wheels of the crank and camshaft)

    The 1.0-litre ECOTEC has four valves per cylinder, controlled by two overhead camshafts. The camshaft control is variable for the intake and exhaust sides, and combined with port injection ensures optimised gas exchange throughout the entire rpm range. This adds to both driving pleasure and efficiency.
    A three-cylinder engine is an inherently efficient unit, with internal friction considerably lower than in a comparable four-cylinder unit. To make the engine as light as possible, the crankshaft is hollow cast, the oil pump drive is especially low friction and the oil pump works at two pressure levels – a special feature in this class.
    The entire engine is designed for low friction oils with a viscosity grade of 5W-20. All of these measure ensure excellent fuel efficiency.
    “Our three-cylinder engine in VIVA is the latest addition to a new generation of engines which were developed with the focus on outstanding efficiency, smooth running characteristics and low noise emission,” said Charles J. Klein, Vauxhall/Opel’s Vice President Vehicle Engineering, Europe.
    Powertrain Offensive
    The one-litre engine in VIVA is part of Vauxhall/Opel’s large-scale engine offensive, which started last year and will bring 17 new ultra-modern powertrains to market before 2018. The 1.0-litre ECOTEC (75PS) is the base engine of a new generation of small Vauxhall petrol engines. The next more powerful version is the 1.0 ECOTEC Direct Injection Turbo that has been available in ADAM and Corsa since last year with an output of either 90PS or 115PS. Later this year, a 105PS version will appear in the all-new Astra.
    VIVA’s chassis and steering have been developed and benchmarked with rivals on UK roads to provide exceptional safety and class-leading comfort.
    The front suspension has side-load compensation springs that improve the ride performance and damper reliability. Double bonded bushings also increase ride and handling performance while simultaneously minimising noise, vibration and harshness (NVH), with their high structural stiffness supporting superior handling performance.
    Additional ride-improving measures have also been implemented for the rear suspension. The V-section tubular-type torsion beam is mounted in front of the rear wheels allowing the roll-rate and roll-steer characteristics to be perfectly aligned with engine power and vehicle weight. Furthermore, rear dampers are vertically mounted behind the rear wheels to provide a good shock leverage ratio and efficient damping performance, and the vertical dual-path mount provides better ride and NVH performance

  2. #2
    Junior Member
    Join Date
    Dec 2015
    I have had a new Viva for about a month and a half now and it has got 1500 miles on the clock. I find 2nd gear a bit baulky when changing up from 1st. Its ok changing down from 3rd. Its just a bit "catchy" when selecting the gear. Do you think this will ease off as the box beds in?


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