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Twin air vs Multijet #1638490
21/01/2020 12:48
21/01/2020 12:48
Joined: Oct 2007
Posts: 11,081
,
S
samsite999 Offline OP
I AM a Coop
samsite999  Offline OP
I AM a Coop
S

Joined: Oct 2007
Posts: 11,081
,
Long time, no new post.
Wanted to ask the general forum consensus of the TwinAir fiat engine vs the Mjet.
Looking at replacing the horrible 330d i just got rid of with a panda 4x4 and the engine choice is a tough one.

The sensible in me said jet the mjet, its been about since forever, it works, its not complicated or special, its low power, low output, low stress and given maintenance seems to outlive most of the cars its put in (and I have in a 2wd version with no real effort and a EGR light on got 75mpg on country roads)

The none sensible part of me tells me to but the petrol twin as it sounds awesome, same kind of power (i think more) comes with a 6 speed box and probably would sute my driving much better. I also hear stories about horrible MPG, failing clutches killing the gearbox and generally its a relatively new engine for fiat who seem to be phasing the powerplant out in place of a 3 cylinder unit.

If I had the choice, id go for the 1.2 fire unit but they dont do that in the 4x4

Here are the numbers although the mjet was actually hard to get hold of

875cc 8v two-cylinder turbo, 84bhp@5600rpm, 107lb ft@1900rpm
1.3 Mjet 75bhp 140lb ft

Last edited by samsite999; 21/01/2020 20:36. Reason: Mpg not mph.....

Re: Twin air vs Multijet [Re: samsite999] #1638510
21/01/2020 19:52
21/01/2020 19:52
Joined: Apr 2017
Posts: 109
Troon, South Ayrshire
Alan_K Offline
Club member 1599
Alan_K  Offline
Club member 1599
On a journey

Joined: Apr 2017
Posts: 109
Troon, South Ayrshire
I personally always go for the bigger engine
As it won’t have to work as hard is my theory

And I do feel engines are trying to be too smart for their own good these days

Re: Twin air vs Multijet [Re: samsite999] #1638512
21/01/2020 22:10
21/01/2020 22:10
Joined: Dec 2005
Posts: 7,348
Abu Dhabi, UAE for a while
DaveG Offline
Club Member 311
DaveG  Offline
Club Member 311
Forum is my life

Joined: Dec 2005
Posts: 7,348
Abu Dhabi, UAE for a while
I have a 1.4 petrol multiair turbo in my 2017 124 Spider, 140bhp as standard (170bhp in the Abarth version, just a different ECU map) but I now have a "phase 2" map which should be around 200 bhp, with a "muffler delete" (no silencer) exhaust and free-flow air filter, it's a real hoot laugh

Can't you get a remap for the 1.3 multijet? What's important to you, power, torque or fuel consumption?


1996 Portofino 20vt & 2000 Pearl White Plus
1985½ & 2016 2017 Fiat 124 Spider + XF Sportbrake
Re: Twin air vs Multijet [Re: samsite999] #1638535
22/01/2020 12:10
22/01/2020 12:10
Joined: Dec 2005
Posts: 3,156
S. Wales. Way beyond my means
Gripped Offline
I need some sleep
Gripped  Offline
I need some sleep

Joined: Dec 2005
Posts: 3,156
S. Wales. Way beyond my means
I agree with the above that the "rush" to small capacity petrol engines is all very well, but the fact is turbo diesels are still more powerful in the real world IF you also want good fuel economy. They've refined diesels over the last 20 years to the point where they outperform petrol (IMO) the instant grunt for overtaking and relaxed motorway cruise for example. And with modern DPF, AdBlue etc, they are far less polluting than before.

I love the lazy torque of a diesel and i think they would suit a 4x4 car better.

There is a move to penalise diesels, but given that they probably still make up a large proportion of UK cars, it'll take a while to phase them out.

On the other hand, fizzy turbo petrols are great fun to drive, but you don't generally get the fuel economy.

Petrols have some catching up to do, but nowadays the efficiency will be achieved by going hybrid.

Last edited by Gripped; 22/01/2020 12:14.

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Re: Twin air vs Multijet [Re: samsite999] #1638668
25/01/2020 11:34
25/01/2020 11:34
Joined: Mar 2006
Posts: 885
Warrington
G_Man Offline
Club member 1656
G_Man  Offline
Club member 1656
Enjoying the ride

Joined: Mar 2006
Posts: 885
Warrington
Can't say much about the MJ but when we were in the market last year for a Fiat 500 I asked the question on the Fiat forum which was better - the 1.2 petrol or the TA? For less engine hassles I was advised to get the 1.2 which we ultimately did. Oil changes and using the correct grade is crucial in the TA apparently (goes for most cars tbh) and yes you're aware of the mpg disappointment. More of a concern in most of the current Fiat's is climate failure which is very expensive (so we got a manual aircon) and the auto gearbox (I think) which should be avoided. Funnily enough I was asked why not get the Panda which is arguably the better car but the looks won out with the females in the family rolleyes

Re: Twin air vs Multijet [Re: G_Man] #1638704
27/01/2020 08:32
27/01/2020 08:32
Joined: Dec 2005
Posts: 1,630
Brisbane, Australia
Possum Offline
My life on the forum
Possum  Offline
My life on the forum

Joined: Dec 2005
Posts: 1,630
Brisbane, Australia
I have a fellow car club member who has a 1.3 MJet Panda he uses for his city run-around plus uses it for his Uber work. He speaks very highly of it for this use. Has done a few interstate trips in it as well, when he doesn't take his 1.4 Grande Punto Sport.

We discussed this last Friday when he picked us up for a trip to the airport for our 5 hour flight across the country in a Dreamliner to Perth (Western Australia, not Scotland).


Re: Twin air vs Multijet [Re: samsite999] #1638769
29/01/2020 15:44
29/01/2020 15:44
Joined: Dec 2005
Posts: 17,205
Staffordshire
Nigel Offline
Club Member 123
Nigel  Offline
Club Member 123
Forum veteran

Joined: Dec 2005
Posts: 17,205
Staffordshire
Neither engine can be classed as decent

The twin-air sounds novel and has some character, but it has to be driven hard to make progress, which kills the fuel economy. Some reliability concerns too, which are probably down to the thrashing that the engine tends to get

The 1.3 diesel is horribly unrefined - it’s clattery and tappety and not particularly powerful or grunty.

If I had to choose, it would be the diesel , but only because it can be remapped up to a faintly desirable 100+ bhp


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