Why is the Honda Amaze diesel India’s most fuel efficient car?

Posted on: Apr 1, 2013 - 8:20am IST

Over the last five years, Honda has been asked time and again when their diesel technology will make it to India. They’ve never given a simple and straight answer to this question.

Honda Amaze diesel engine

They blamed the diesel quality in India for not being compatible to their engine’s requirements, showed us equations of diesel not giving enough financial benefits for the average level of car usage or the lifecycle of the ownership and said some products internationally don’t have the oil burner for them to launch locally.

We didn’t know what was unfolding behind closed doors until a couple of weeks ago when we assembled in Goa to sample their first go at the diesel market. Honda’s arrived very late on the scene, but the delay can be forgiven and would be gradually forgotten as what’s in store is an impressive piece of kit, which out-specs the Fiat 1.3L Multi-jet and the Renault-Nissan K9K motors.

The 1.5L Earth Dreams diesel motor is an adaptation of the 1.6L engine used on the CR-V and Civic in Europe. The engine’s stroke length is shorter in India for it to qualify its applications for lower excise duties. The Amaze is the most powerful diesel engine in its class with a power output of 100PS and torque output of 200Nm. The ARAI-certified fuel efficiency figure stands at an industry-leading 25.8kpl.

Honda’s able to achieve a very high fuel efficiency figure as they’ve developed a new engine oil specifically for this engine. It has the lowest viscosity for any diesel engine oil in the world.

Honda’s reduced the weight of the engine components to improve power to weight ratio. Some of the facets revealed in the media presentation were a high-strength Nitrided crankshaft, 1600 bar injection pressure, light-weight piston, thinner crankshaft and a new cooling system that uses a visibly smaller water pump.

The four-cylinder block is an all-aluminium open-deck high-pressure diecast unit designed for low pumping loses through a high-swirl head port. The semi-synthetic oil’s viscosity is half as much as that of the 5W 30 oil at 25 degrees centigrade. The fuel strainer is integrated into the engine. Thanks to the weight-shaving efforts, the engine tips the scale at 152 kg.

A chief Honda engineer said the fuel efficiency will drop by 5% if the customer shifts to another brand of engine oil.

The 5-speed manual transmission paired to this diesel engine is also new. Designed to provide a “drawn in shift-feel” it sports a bullet-shaped case. Honda highlighted its high stiffness and light weight as important features.

Honda’s not forthcoming on the future applications of this motor. We assume that the Brio, the Brio-based MPV and next generation City and Jazz models are the chosen candidates and that their future would be very uncertain without a diesel option.

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13 thoughts on “Why is the Honda Amaze diesel India’s most fuel efficient car?

  1. Mohammed says:

    Incredible achievement. 100 ps with 25.8 kmpl !!! Rightly said, the delay can be forgiven 🙂

  2. Yuvi says:

    Astonishing specifications..!

    Why Honda has not tried this for City and Jazz?

    Looks like this engine is going to rule india for some time. It is unfortunate that honda has not offer this engine for their flagship products like Jazz and city.

    Amaze and Brio looks very basic and entry level and has competitor vehicles which are already established in India like the Ritz,Swift, Dzire and i20.

    Interested to see the sales numbers!

    1. Jazz and City are nearing the end of their product lifecycle. It would not make sense to make such a massive investment at this point of time. The next generation versions (due in 2014) will certainly come in a diesel avatar.

  3. Sunny says:

    11th April to be the Launch date confirmed , just updated the Petrol delivery will commence first
    Followed by the Diesel

    Diesel Should have been the priority , ideally …….

  4. sandy says:

    Amazing, to know Amaze i-Dtec leaving the 1.5 liter 90PS diesel club members like Ford Fiesta diesel and Sunny/Scala K9K to become 100PS and torque output of 200Nm pocket rocket, yet managed to surpass IndigoCS diesel in mileage front.
    Is this 1.5 liter i-DTec find the place inside City with higher power to become benchmark in it’s segment?

  5. Ayyappan says:

    Oh My God !

    100 bhp power with 25.8 km per litre !!! Might impressed with the specs !!! Hope they price it aggressively too.

    Thanks so much IAB for making my day ! It’s such a great start to my week !

    Teriffic news and Bye Bye Ecosport.


    thanks to technology

  7. yashwant says:

    Wow. That looks promising. Any idea when Amaze would be launched?

    1. Anshul says:

      Bookings of the Amaze have already started.The launch will take place on 11th April.

    2. timmy says:

      cardekho saying april 11 launch..didnt read the whole article though…

    3. Sunny says:

      11th April is the launch date , bookings already open

      1. shrikant says:

        Per a Pune Dealer Sales Guy
        Pune Launch Event @ Le’ Meridian on 11th APR

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About the Author
Shrawan Raja

I'm Shrawan, the Founder & CEO of IndianAutosBlog.com. I love teamwork and talking about cars.