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Prius vs Mazda3 vs Golf TDI

  • By Neil Dowling
  • The Sunday Times
  • image

    The Prius is a wonderful piece of engineering that will suit people who have green intentions and have the money to back up their convictions. Photo Gallery

Running a car partly on batteries for economy yet with access to a petrol motor for performance could just be the best of both worlds.

That's the lure of hybrids and the reason why cars such as Toyota's Prius is so attractive to green-tinged and fuel-conscious buyers. But are they the be-all and end-all of personal transport?

Let's have a look at the new Prius hybrid compared with automatic versions of the Volkswagen Golf diesel and a Mazda3 Maxx with its petrol engine.

The entry-level Prius is the most expensive at $39,990 but the Golf 103TDI with its DSG auto transmission isn't that far behind at $35,690. The automatic model of the Mazda3 Maxx is the cheapest at $27,050. (Prices do not include on-road costs).

Toyota claims fuel consumption lows of 3.9 litres/100km but I never saw anything like that in predominantly city and suburban driving, so I'm using my test average of 4.5 l/100km.

To even things up, I'm also using my test results for practically the same five-day city/suburban cycle for the Golf and Mazda3 which are 5.2 l/100km and 9.7 l/100km respectively.

It still looks good for the Prius but there are some small-print items that need to be accounted. For example, Toyota prefers the Prius to use premium petrol that adds about 5c a litre (to $1.20/litre) to the fuel bill.

The Golf runs diesel ($1.25/litre) and the Mazda3 drinks standard unleaded ($1.15/litre). Drive 15,000km a year and the Prius costs $810 in fuel; the Golf is $975; and the Mazda3 is a hefty — well apparently — $1673.

If you're worried about CO2 emissions, I'll let you know that using the fuel economy figures above, the Prius will emit 1.6 tonnes of CO2 a year; the Golf exhales 2.1 tonnes; and the Mazda3 dumps 3.4 tonnes.

(In perspective, a hectare of trees will absorb about 8 tonnes of CO2 a year so plant out and theoretically you'll easily offset these three.) Forget the fact that the Prius costs nearly $13,000 more to buy than the Mazda3 and you would pick the Prius from this lot as the car to minimise your annual fuel bill.

But take purchase prices into account and the numbers crunch over to show the Prius is costing $2.72 per kilometre over a fixed 12-month, 15,000km period. By comparison, the Golf is costing $2.45 a kilometre and the Mazda3 gets that down to $1.91.

Of course, the fixed 15,000km period is hypothetical. However, it indicates that by paying more for a car to save fuel, you're not saving — you're losing. This calculation dismisses the fact that the Prius is a wonderful piece of engineering. It will suit people who have green intentions and have the money to back up their convictions.

It is a clever, well-built car that while short on performance gives owners a wonderful buzz that they're driving a slice of the near future. The Golf is also a great drive, full of German quality — significantly improved on this latest Generation VI model — and function. But the Mazda3 seems to grab the broadest attention, as its sales figures confirm.

Comments on this story

Displaying 3 of 12 comments

  • The battery just keeps going and going. The future price of petrol could be a factor.

    simon Posted on 07 June 2010 1:18pm
  • I think the Prius is a very good car in its own right, taking into account the technology that it pack for that price. But the value still doesn’t stack up as a logical choice. Beside from being green which is really important to me, i at the end picked the Mazda3 instead. Until i can afford to run a Prius i’ll wait til the tech trickled down. Anyway i can sleep good at night knowing that i didn’t buy a 6 or 8 cylinder car.

    phuong of canberra Posted on 21 January 2010 4:04pm
  • You also need to take into the account the resale value. Prius are near worthless in 10 years due to the battery reaching end of life. Also need to consider complexity and cost of ownership… The diesel golf drives better than the others, it rivals the mazda on resale, is light on fuel, and will last forever.

    Timo of Sydney Posted on 30 August 2009 10:11am
  • @Terry
    Please explain to me how you can compare a Mazda 6 or a Honda Accord to a Prius in size? both of them are much longer and heavier cars, not to mention the prius costs an awful lot more, the prius is more the size of a mazda 3/hyundai i30/ford focus

    That an a manual i30 diesel can get within 1L/100km of the prius’s claimed figures, one of the people I know who has one has got one down to 3L/100Km even, so how long would it take for you to make up for the $20000 extra you spent on it?

    I agree that the prius is a great piece of technology but its just too expensive to compete with cars in its size class.

    Rob of QLD Posted on 26 August 2009 12:08am
  • @Steven
    “They also claim their rivals use more than twice the fuel. Again, that’s simply not true.
    Next around half of the Prius’ fuel saving abilities come from thin tyres, new rubber compounds, lightweight materials, stop/start engine technology and aerodynamics. Once again, these are good but they have nothing to do with a hybrid, any car can do them.”

    How is the 50% fuel claim not true?  When I was looking at a car I wanted a mid sized car as we have 3 kids so the shortlist was Prius, Mazda6 & Accord Euro.  In auto form the official figures are 4.4 for Prius, 8.7 for Mazda6 and 8.9 for Accord - the Prius is pretty close to 50% of the other two (and as I have said I get better than the quoted figure around town in the Prius but my brother has a Euro and does worse than the quoted figure). 

    As to the “any car can do them” argument - there is probably some truth in that but nobody IS doing it so what is the point of arguing that?  Also the Prius is a bit smarter than normal stop-start technology - on my drive to drop the kids at school roughly half of the distance is coasting without using petrol - that is how it gets such good economy and no non-hybrid can do that.

    Terry Bradford of Buderim, QLD Posted on 25 August 2009 12:27pm
  • @Terry of Buderim
    “Shipping related greenhouse gas emmissions are a furphy created by opposing manufacturers to try to discredit the Prius”
    Firstly, there is more to it than shipping, it goes right back to the mining sector and right through to recycling.
    Now, I’ll assume you have you seen the “Prius saves 35% on co2 emissions” graph or the countless media reports and documentaries propagating it.
    It’s a blatant lie.
    Toyota have neglected their energy debt due to solar panels on their factory roof. Responsible choice, but they could have done the same thing to any car, the hybrid aspect has nothing to do with it. False data to make impressive claims, and this comes directly from their own documentation. They simply don’t emphasise it and the media haven’t bothered to look into it.
    They also claim their rivals use more than twice the fuel. Again, that’s simply not true.
    Next around half of the Prius’ fuel saving abilities come from thin tyres, new rubber compounds, lightweight materials, stop/start engine technology and aerodynamics. Once again, these are good but they have nothing to do with a hybrid, any car can do them.
    Don’t believe the hybrid hype.

    Steven Williamson of Melbourne Posted on 23 August 2009 2:55pm
  • Having just spent the last two days driving a new 103 TDI Golf DSG from our work car pool and covering a 50/50 mixture of stop start suburban and highway I averaged 4.8 L / 100 quite amazing. The ride and silence of the car are also remarkable. The motor is effortless it has so much torque it seems to run around 1200-1500 rpm just cruising around suburbia. Also with regard to fuel prices lately I’m seeing diesel is cheaper than petrol more often than not. For me the diesel is a revelation.

    R Marks Posted on 22 August 2009 7:20am
  • I have the previous model Prius and love it - not sure why you achieved such poor economy as I can easily get my Prius to average around 4.0 l/100km in suburban driving (and the claimed figure for this model is 4.4) so you should easily get the new one under 4.0.  There is a bit of a technique to driving a Prius to get the best economy (you still go just as quick but need to use the throttle a bit differently to get the best economy) so maybe the tester needs to learn this technique (takes an hour or so to pick it up and then it becomes natural).

    David - the batteries in these cars are designed to last basically the life of the car for most people and will be readily recycled due to the value of the minerals in them.  Shipping related greenhouse gas emmissions are a furphy created by opposing manufacturers to try to discredit the Prius - remember that in almost all cars these days components are shipped from many countries to make up the car (engines may come from one country, brakes from another, etc) and container ships are the most efficient form of bulk transport so CO2 emmissions from shipping even right around the world are relatively small.

    Terry Bradford of Buderim, QLD Posted on 20 August 2009 4:45pm
  • All motor cars hardly hurt the environment at all if people only used them for what they were originally intended.

    Leave the damn thing in the garage and make other arrangements for your day to day transport needs

    Use the car only as a recreational device - prefereably as an escape machine from the burbs to wherever and back again.

    A car that is driven once a fortnight or so and mostly at cruising/highway speeds will have no ill effect on the environment whatsoever.

    In these conditions even a 1959 Cadillac Eldorado will be absolutely fine.

    As for the Prius - its all about easing the conscience of the car-addicted bougeois westerner than actually addressing the problem.

    Oh and yes Mr Holgye is absolutely right - unless the battery is properly decommissioned and disposed of safely (expensively that is) it will pretty well wipe out any advantage you have gained from driving the thing in the first place.

    cheers

    Damian Harris of Sydney Posted on 19 August 2009 10:20pm
  • Living in the country and basically cruiseing at 110 kmph where ever we go I would suggest that the diesel would be more economical as the hybrid works on regenerating energy from braking which we hardly do. Great in the Suburbs not so good on the open road

    John Stone of Eumundi QLD Posted on 19 August 2009 10:01am
  • Neil when hybrid cars are produced the pollution from there creation to there end are so much more than the tubo diesel cars,because the manufacturing of there battery’s.they are transported from one side of the world to the other in ships which also adds to the green house gas. and then delivered to the car manufactures.then disposal of these toxic materials. buyers are not even considering this because the industry in a whole is not telling the buyers the full story.Please next time if your going to do a test like this again.fill up all the cars with there respectful fuels and drive them around a race track in all the same manner and see who travel’s the greater distance at what cost etc and also factor in the cost of the battery’s when replacing them. David holgye

    David Holgye of narre warren north Posted on 18 August 2009 2:47pm
  • I have the latest Mazda 3 Maxx Sport hatch auto and love it except for a 2 things.

    My main gripe is the sharp edge of the parcel tray/shelf that sits on top of the rear boot area - I cut my forehead on it when leaning down to lift a moderately heavy ceramic pot out of my boot!  The sharp edge (for me) is right in my way if I lean down to any significant degree to get things out of my boot.

    My Mazda dealer even agreed with me the edge was sharp and a potential risk after I rang him and he examined a hatch in their showroom.

    I then raised it formally with Mazda Australia who replied in writing basically saying they concluded that there was no design fault!

    So, I am left with this sharp edge on the parcel tray which they have confirmed is the same on the other Mazda 3 hatch models.  I am NOT happy as I now have to remain ever vigilant when opening the boot of my car - surely I should not have to remain alert like that.  Mazda needs to have a softer, more rounded edge on the parcel tray - surely this is not too hard?

    My other issue is frequent squeaking of what sounds like the springs in my driver’s seat when I am driving - yet I am not too heavy - is this because it’s a new car?

    Creighton of Adelaide Posted on 18 August 2009 2:02pm
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