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Old 11th February 2019, 23:35   #51
Ross R75
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Lots of perfectly valid opinions here. I own a couple of Volvo 850 T5s, a manual and an auto. Well maintained, the 5 cylinder 2.3 Turbo petrol engine is super refined and blisteringly fast, even in standard form. They are also far better designed and built than any 75 or ZT.

But....... I still love my 75. It's a truly great car with a character all of it's own.

In my opinion:

V6: Wouldn't have it in a gift. I've owned 3 and it is possibly one of the worst designed V6 engines ever made. The 2.0 KV6 is totally pointless, the 2.5 KV6 is equally pointless but thirstier. A genuinely horrible piece of design, it does nothing well, apart from make a nice noise, and that's purely by accident. This is also subjective, because we're all used to hearing buzzy little 4 cylinder engines in this country.

K4 1.8: Underpowered in NA form, and not reliable enough in any form. The 1.8T at 160bhp standard has enough performance to haul such a heavy car. Remapped it could be mildly entertaining but still nothing to write home about. More developed engines of the same vintage from other manufacturers are far better, more powerful, and more reliable. Whoever designed the cooling system and the pressure release thermostat probably spent a great deal of their youth taking illicit substances, and this is the result. Don't take drugs kids!

M47R 2.0 CDT: Horribly unrefined compared to any modern petrol engine. Suffers from poor clutch design and from the above-mentioned connoisseur of hallucinogenic substances who was likely also responsible for putting the ECU in a swimming pool, opening the roof and then sealing the bottom up. Mental PCV system a'la BMW, but at least they saw fit to modify the filter, and then not tell Rover about it. Remapped, they are torquey, quite nippy, and still very frugal. In fact they are insanely frugal for such a large car, unless coupled with an automatic gearbox; In this case, see KV6.

The long and short of it is that they all have their problems. The KV6 is the only engine I would absolutely rule out. I'd have a 1.8 or a diesel, but in my experience the diesel is cheaper to run, more flexible, and more reliable.
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Old 12th February 2019, 08:38   #52
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Guys who used to look after mine (both ex MG Rover mechanics)

1.8T
Looked after best of the bunch. Easy to work on

Diesel
Filthy horrible things to work on.

V6
Not so easy to work on

V8
Okay if you have a bottomless pit of petrol money (one of the guys had 2)
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Old 12th February 2019, 10:03   #53
Dorchester2
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Rover 75 Saloon V6 2.5 1999 - Rover 25 1.4 2002 remapped - both full E85

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Quote:
Originally Posted by Ross R75 View Post
But....... I still love my 75. It's a truly great car with a character all of it's own.
In my opinion:
V6: Wouldn't have it in a gift. I've owned 3 and it is possibly one of the worst designed V6 engines ever made. The 2.0 KV6 is totally pointless, the 2.5 KV6 is equally pointless but thirstier.
Thirsty maybe but my V6 auto is not expensive at all to run because she is fuelled with full E85. I know it's of any use in the mainland, but at the moment trendy & a very bargain in France.
I've just done a few inexpensive mods: airbox, 2 resistors & a MIJ full ss derestricted exhaust (my genuine exhaust line was obviously corroded hence it should have been swapped anyhow).
But what a change!

Given that a tank is around 65L (14.5 gal), if we admit I've to fill it up from empty, it costs me 42€ i.e. £36.
And I can drive up to 520km (323ml) with a full tank (which is the only downside when doing long journeys - but lots of E85 stations here), that gives me around 23mpg (average on a one year period, 6/7k ml, always in sport mode), given that I need more E85 (+25%) than 95ron petrol. In petrol the equivalent would be 30mpg average.

Apart that mean & tight calculation (if one doesn't want to spend money when fuelling up a 75 V6, he may go for a small 4 cyl urban car), E85 on my KV6 2.5 cum mods gives me a more responsive & torquey engine than from stock with impressive kicks down. And nothing to be compared to regarding comfort, luxury, sound & smoothness...

She is a gem & I'm a happy bunny!
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  • This vehicle was the 7,517th 75 to run off the production line, out of 112,381
  • This vehicle was the 1,190th 75 2.5 V6 Contemporary to be made out of 8,214
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Last edited by Dorchester2; 12th February 2019 at 10:05..
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Old 12th February 2019, 10:09   #54
stevestrat
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Quote:
Originally Posted by Nick Greg View Post
V8
Okay if you have a bottomless pit of petrol money (one of the guys had 2)
They're not as bad as people think. Mpg isn't much worse than the V6, I can get 28 on a long run.
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Old 12th February 2019, 11:37   #55
Gigagator
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I've only ever driven K's in these cars but I'd like to throw in my dime anyway.

As a 25 year old who's only ever had an Alfa 147 and a Mito on finance, I bought my 75 (1.8) and the others halfs 25 (1.4) basically as projects to learn more about car maintenance and mechanics.

To my surprise I haven't needed to do anything beyond oil and filter service, plugs and some suspension gubbins.

The 1.8 in the 75 does feel underpowered, but it seems to have a sweet spot in 3rd and 4th where it pulls nicely.

At certain speeds (nothing over 60 though) she gives a lovely warm warble sound which I absolutely love.

My only gripe is the gearing is too short. I'm regularly on the motorway in my 75 with work and it's a bit painful over 65 noise-wise. Oddly though it seems to quieten down at 80 but she gets a bit thirsty then.

The best thing for me though is I have no qualms about reliability and wouldn't think twice about jumping in either of them and driving 1000 miles.
We're regularly on road trips all around the country watching bands live.

My 2014 Alfa Mito had a two-cylinder 875cc affair which honestly pulled alright thanks to the turbocharger. But it felt like cheese and after 3 years it was sounding rough. I trust the aging K-series engines much more.

I have always wanted a V6 but the cost of running (cambelts!) puts me off.

Last edited by Gigagator; 12th February 2019 at 11:43..
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