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Thread: 1.8VVT underpowered?

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    Default 1.8VVT underpowered?

    The 1.8VVT seems to be perceived as underpowered for a car the size and weight of the Vectra, but there's some interesting reading at the back of the Owner's Manual.

    For each engine derivative, it lists the basic weight of each of the body types as well as the additional weight of each trim level, and the weight of any particularly heavy accessories.

    A 1.8VVT Life hatch weighs in at 1409kg. Admittedly, that's pretty heavy; but it's nothing compared to a 3.0CDTi SRi hatch with a sunroof and a towbar which tips the scales at a whopping 1716kg.

    It's over 300kg heavier! To put that into context, that's the equivalent of carting around 4 adult men.

    In terms of power-to-weight, there's actually not much in it: 100bhp/tonne vs 107bhp/tonne. And it's actually better than a 1.9CDTi (150) SRi hatch which only manages 97bhp/tonne.

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    Regular Member Penfold101's Avatar
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    To be fair, it's probably more to do with torque than bhp... I had a 2.2 Direct Signum, and compared to my 1.9 150 Vectra it was pathetic in the extreme, despite being the same bhp...

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    on paper yeah, but on the road is a different matter

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    Regular Member Gsi3.2's Avatar
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    having driven all of the cars in the range, the 1800VVT is a much more sluggish machine..it does require a fair bit of hustleing along to be fair..

    we've had quite a few on loan and they are a boat ride away from the CDTi range ( or any of the turbo'd engines) in terms of driveability.. they aren't a slow car by any means, but to extract the same level of performance the economy of the 1800 really drops off...we had a 6 month old loan car that was only giving 29mpg to the gallon...and thats what the wifes 3.2V6 gives..and the 1800 doesn't like motorway hills as much either...

    took Payney ( 1800 SRi owner) for a spin in the VVT engined car and even he said it was slower and less responsive than his 1800Xe engined car...

    not knocking then BTW..just trying to explain a few of the comments on here surrounding the 1800VVT....

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    Regular Member Karl's Avatar
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    The difference is that the 1.8 needs to be worked harder to achieve its power. You need to be at the top of the rev range for it to really get going.
    With the diesels you mainly get your power (well, a shove in the back) from around 1900 rpm. This makes it "feel" more powerful, plus you have to push it less to make it go.

    I had an Astra 1.8vvt hire car (an estate design) and I thought it went well, but it cost a fortune to make it go so well. Then again, I now have a 120 cdti and I still push that to its limit.

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    Ex Vec-C Admin Stevel's Avatar
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    Hmm. My own car is a 150 cdti hatch and I've got at the moment a 1.8 estate as a hire car. Been to Durham and back today and it's just too slow.

    Overtaking opportunities which would have been easy in my car were abandoned due to lack of accelaration. I've driven loads of 1.8 hatches too and whilst the engine is fine in the missus Astra it's just not powerful enough for the Vec IMO.

    The estate is good for taking stuff to the tip though.

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    Regular Member Pecojess's Avatar
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    I dont find the 1.8 VVT that slow, its not in the same league as its bigger siblings, but then if I want to go fast, I use the R6!!!

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    I own the 1.8VVTi is design hatchback form, it is be no means a sluggish car, just needs a good poke to get going anywhere fast.

    In comparison to my brothers Sport Hatch 150 CDTi with a box on so arounf 190bhp, there is a roundabout with dual carraige way coming off it and a little way along is a walk over bridge...

    Now both cars come of the roundabout at say 35mph and put ya foot down...

    Upon passing the bridge the astra is just touching a ton and the VVTi is pushing 94 so there really isnt much in it, the astra seems to drop of power quite quick when in the higher end of the gearbox

    and dont even get me started on fuel consumption.. f'ing ridiculous
    HTH

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    Opel sold the Vectra C with the 1.6 Twinport 105ps engine. THAT is slow. Though not as slow as Opel's Mk4 Astra with the 1.2 16v engine.

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