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Old 27-01-2012   #1
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6-speed vs 5-speed gearbox on Sporting

Does anyone know why Fiat decided to go with a 5-speed gearbox on the Sporting 16v 1.8, as opposed to the 6-speed? Just wondering really.

I had the 6-speed on my last Stilo (1.4) and it was great for motorways. The fifth gear on the Sporting just seems to be revving too high at cruising speed, although there is a lot of 'pull'. Wondering if that's partly behind the fuel economy..
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Old 27-01-2012   #2
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Re: 6-speed vs 5-speed gearbox on Sporting

I suspect the key is in the word 'Sporting'. When this car was built 6-speeders were comparatively rare (they're more common now). The idea was to create a more sporting feel by introducing six more closely-spaced ratios. As you say, this means higher revs while cruising the M'ways.

Then again, I could be completely wrong...
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Old 27-01-2012   #3
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Re: 6-speed vs 5-speed gearbox on Sporting

Quote Originally Posted by Yellow Peril View Post
I suspect the key is in the word 'Sporting'. When this car was built 6-speeders were comparatively rare (they're more common now). The idea was to create a more sporting feel by introducing six more closely-spaced ratios. As you say, this means higher revs while cruising the M'ways.

Then again, I could be completely wrong...
But the Sporting is the 5-speed one? Unless I'm completely misunderstanding what you said (highly possible!). I would have thought they'd go for more gears on the sports models, rather than the other way around. Just struggling to imagine why you'd put a 6-speed on a 1.2 / 1.4 / 1.6 but a 5-speed on a 1.8 sports version.
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Old 27-01-2012   #4
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Re: 6-speed vs 5-speed gearbox on Sporting

There has never been a 6 speed gearbox fitted to the 1.8. So ther was nothing on the shelf for the sporting.
I think the 1.4 (a more recent design) got the 6 speed to get a lower consumption (and maybe to get taxbonusses for drivers) in several european countries.

gr J
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Old 27-01-2012   #5
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Re: 6-speed vs 5-speed gearbox on Sporting

Quote Originally Posted by A3jeroen View Post
There has never been a 6 speed gearbox fitted to the 1.8. So ther was nothing on the shelf for the sporting.
I think the 1.4 (a more recent design) got the 6 speed to get a lower consumption (and maybe to get taxbonusses for drivers) in several european countries.

gr J
Ah so the 3dr 1.4 was a more recent design than the sporting? Starts to make a bit more sense if that's the case. Definitely missing having that sixth gear!
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Old 27-01-2012   #6
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Re: 6-speed vs 5-speed gearbox on Sporting

Quote Originally Posted by kiopo View Post
Ah so the 3dr 1.4 was a more recent design than the sporting? Starts to make a bit more sense if that's the case. Definitely missing having that sixth gear!
The 6th gear would be useless on a heavy car as the Stilo with the underpowered engines like 1.2, 1.4 and 1.6 in several countries. One of them is Norway. Where I have lived the 6 last years, the 5th gear was obsolete - even on local motorways as it was so much up and down in addition to speed restrictions. I used to call it "The Denmark Gear" as 5th was nice to have there when cruising in 130 km/h on a completely flat landscape.
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Old 27-01-2012   #7
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Re: 6-speed vs 5-speed gearbox on Sporting

Quote Originally Posted by Morty Mort View Post
The 6th gear would be useless on a heavy car as the Stilo with the underpowered engines like 1.2, 1.4 and 1.6 in several countries. One of them is Norway. Where I have lived the 6 last years, the 5th gear was obsolete - even on local motorways as it was so much up and down in addition to speed restrictions. I used to call it "The Denmark Gear" as 5th was nice to have there when cruising in 130 km/h on a completely flat landscape.
The 6th gear isn't useless on my 1.4 for motorways tbh, even driving on country routes.
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Old 27-01-2012   #8
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Re: 6-speed vs 5-speed gearbox on Sporting

Quote Originally Posted by Most Easterly Pandas View Post
The 6th gear isn't useless on my 1.4 for motorways tbh, even driving on country routes.
That depends on the speed limit. Try putting in 6th gear and travel around on a motorway with 80 max km/h uphills with 4 people and luggage. 6 speed boxes only comes with larger engines and diesels here.

Country routes are actually better for The Denmark Gear than on motorway driving here, as it is more important to keep the speed of the other vehicles.
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Old 27-01-2012   #9
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Re: 6-speed vs 5-speed gearbox on Sporting

You didn't mention 4 people and luggage though. That's another story
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Old 27-01-2012   #10
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Re: 6-speed vs 5-speed gearbox on Sporting

Quote Originally Posted by Morty Mort View Post
The 6th gear would be useless on a heavy car as the Stilo with the underpowered engines like 1.2, 1.4 and 1.6 in several countries. One of them is Norway. Where I have lived the 6 last years, the 5th gear was obsolete - even on local motorways as it was so much up and down in addition to speed restrictions. I used to call it "The Denmark Gear" as 5th was nice to have there when cruising in 130 km/h on a completely flat landscape.
But the 6th gear was on the 1.4, but not on the 1.8 (the one I currently have)! So what you're saying is exactly why I'm confused as to why they did it that way round, you normally see sportier cars with more gears for smoother changes / more consistent power etc. Just don't understand why you would ditch that gearbox in favour of a 5-speed when coming up with the sport version.

I did find the 6th gear useful on the 1.4 for motorways, but it's pretty flat terrain in the UK really. Felt like the gearing from third to sixth was really good though. The 5-speed on the Sporting is just crying out (literally, noisy as hell at cruising speed) for a higher gear, in my opinion.
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Last edited by kiopo; 27-01-2012 at 21:13.
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Old 28-01-2012   #11
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Re: 6-speed vs 5-speed gearbox on Sporting

Quote Originally Posted by kiopo View Post
But the 6th gear was on the 1.4, but not on the 1.8 (the one I currently have)! So what you're saying is exactly why I'm confused as to why they did it that way round, you normally see sportier cars with more gears for smoother changes / more consistent power etc. Just don't understand why you would ditch that gearbox in favour of a 5-speed when coming up with the sport version.

I did find the 6th gear useful on the 1.4 for motorways, but it's pretty flat terrain in the UK really. Felt like the gearing from third to sixth was really good though. The 5-speed on the Sporting is just crying out (literally, noisy as hell at cruising speed) for a higher gear, in my opinion.
I do see your point (that it is noisy, but if you drive at 65mph it's barely noticeable), but at the time of release of the stilo, there was no 1.4 engine, and most of them came with a 5-speed. (I do have a friend who owns a 52reg 1.2 stilo with 6-speed... jealous of him as he's averaging 60-70mpg on motorways, whereas me with a 1.6 16v i average 35-45mpg on the motorways as I don't have the extra 6th gear). I reckon when they released the 1.4 engine (in 2004 iirc), they decided a 6-speed will be better for fuel consumption.

Probably when fitting the 1.8 sporting a 5-speed they thought it will give it more torque in higher speeds. (correct me if I'm wrong)

Andy

LE: btw, what year is your 1.8 sporting?
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Old 28-01-2012   #12
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Re: 6-speed vs 5-speed gearbox on Sporting

I would have thought that a big engine with a wide power band and spread of torque would need less gears than a small, revvy engine in order to keep in the power band but the current trends seems to be to cram as many gears in as possible.
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Old 28-01-2012   #13
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Re: 6-speed vs 5-speed gearbox on Sporting

Quote Originally Posted by andreist31 View Post
I do have a friend who owns a 52reg 1.2 stilo with 6-speed... jealous of him as he's averaging 60-70mpg on motorways
Sorry but your friend is having you on. No way a heavy Stilo with a 1.2 petrol engine of 2002 vintage can achieve a real 70mpg, six speed or not.
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Old 28-01-2012   #14
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Re: 6-speed vs 5-speed gearbox on Sporting

Quote Originally Posted by Yellow Peril View Post
Sorry but your friend is having you on. No way a heavy Stilo with a 1.2 petrol engine of 2002 vintage can achieve a real 70mpg, six speed or not.
Either it is downhill all the way, or the instrument cluster has been changed without proxy. I got fantastic readings (both ends of the scale) before I did a proxy.
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Old 28-01-2012   #15
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Re: 6-speed vs 5-speed gearbox on Sporting

The smaller engines have more gears as the lower gears are lower ratio for better acceleration and higher end are higher ratio for improved economy. It makes perfect sense and you'll probably find top gear in 5 and 6 speed boxes have similar ratios. The 6 speed box will do 2000rpm at 50mph, what does the 5 speed box do?
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