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Fiat introducing new 2-cylinder 0.9L Turbo TwinAir in 2014 MiTo mini

0.9 TwinAir. Click to enlarge.

Fiat is introducing a new two-cylinder 0.9 Turbo TwinAir 105 HP engine for the 2014 Alfa Romeo MiTo sport mini. The gasoline engine delivers 105 hp (72 kW) at 5500 rpm and maximum torque of 145 N·m (107 lb-ft) at 2000 rpm/min, with combined cycle fuel consumption of 4.2 l/100 km (56 mpgUS ), equivalent to 99 g CO2/km. (The 0.9 Turbo TwinAir is also offered in the Fiat 500 L.)

This is the lowest consumption of any of the gasoline or diesel MiTo engines, while power delivery and torque are the second-highest of the MiTo gasoline range. Top speed for the MiTo with the 0.9-liter engine is 184 km/h (114 mph) and it accelerates from 0 to 100 km/h in 11.4 seconds. Specific power is almost 120 hp/liter, a value on a par with sportier engines.

2014 MiTo. Click to enlarge.

Fiat’s two-cylinder TwinAir engine family made its debut with the TwinAir 85 HP in the Fiat 500 in 2010. Fiat had previewed the two-cylinder at the Geneva show earlier that year. (Earlier post.)

The new TwinAir family engine combines the concept of downsizing (displacement and weight reduction) with technologies including supercharging with high-efficiency turbocharger; integration of the exhaust manifold in the cylinder head; and the new MultiAir intake valve control system. The engine is also equipped with a stop-start system.

With its unique intake cam profile, the MultiAir second generation further optimises thermodynamic efficiency of the engine by modulating the amount of exhaust gas recirculated in the combustion chamber (internal EGR).

At launch, the MiTo offered (earlier post) two gasoline engines (78 bhp 1.4-liter and 155 bhp 1.4-liter turbo) and one turbodiesel (120 bhp 1.6 JTDM), all from Fiat Powertrain, will be available at launch. In 2009, Fiat introduced a 1.4-liter turbocharged gasoline engine equipped with the new MultiAir air handling system (earlier post) on the MiTo. (Earlier post.)

In addition to the new 0.9-liter unit, the 2014 MiTo offers 4 other gasoline engines: 70 HP 1.4; 78 HP 1.4; 135 HP 1.4 MultiAir Turbo Petrol (with manual gearbox or Alfa TCT automatic transmission); and the 170 HP 1.4 MultiAir Turbo Petrol. Two turbodiesels are offered: 85 HP 1.3 JTDM and 120 HP 1.6 JTDM. The engine range also includes the 120 HP 1.4 LPG Turbo.



The twin air should be the base engine on the US 500. It has more power and torque than the non-turbo 1.4, and evidently uses less fuel (unless you fully use that extra power and torque, of course).


Nice little engine but im not interrested to buy as i don't want to go down on raw power. Actually im driving a used well maintain 2005 dodge neon and i won't invest money to increase my mpg and sacrifice power. I consider my 130 hp neon as a minimum. IM using low power as i have a manual transmission and i always hypermile my car by driving slow like 55 to 60 mph and i accelerate slowly and i put neutral on downhills and before red lights and stop signs. This little engine would be a sacrifice even if i wait till 2022 to buy it to have the time to wornout my actual car. In 2022 i will probably get a hydrogen fuelcell car. If there is insuficient fuelcell car andf hydrogen stations in 2022 i might consider a fiat gasoline engine as a replacement but with at least 140 hp in a 1100 kg car with manual transmission. What about a bi-fuel nat gas-gasoline multiair engine for before 2022 as i will buy my next car on the used market.

Till then im looking here in this site for nice technologies and in 2022 i will make a move.



The replacement for your Neon is the Dodge Dart, and that uses a Fiat turbo engine that has considerably more power (+30hp) and better fuel economy than your car.

The TwinAir is destined for much smaller cars. The Alfa MiTo uses the same platform as the US Fiat 500, which means that it's 3 feet shorter than your car.

By the way, fuel-injected cars actually get better mileage if you leave them in gear on downhills. That's because they can cut fuel flow completely. Leaving them in neutral forces the CPU to flow enough gas to idle the engine. Not a huge difference, but every little bit helps when you are hypermiling.


Still to large and too powerful for small and mid-size PHEVs?


Why is this engine not offered on the 500? Why do we get the gas pig version? The 500 is small and gets worse mileage than a good number of larger cars. The current 500 with an auto gets terrible mileage. This two cylinder with an automatic could well increase US sales which currently aren't very good. Just an idea!



We've been patiently (not-so-much, of late) awaiting the arrival of the TwinAir Hybrid in the US for years, now... those of us who prize fuel-efficiency above mere power, that is:


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MiTo gasoline engines
  70 HP 1.4 8v noS&S 78 HP 1.4 8v S&S 105 HP 0.9 TwinAir Turbo S&S euro6 1.4 TB 170CV
No. of cylinders, arrangement 4 4 2 4
Bore × stroke (mm) 72×84 72×84 80.5×86 72x84
Displacement (cm³) 1368 1368 875 1368
Compression ratio 11.1:1 11.1:1 10:01 9.8:1
Maximum power output kW (HP - EC) at rpm (NORMAL) 51(70) 6000 57.3(78) 6000 72 natural (5750) 77 dynamic (5500) 125 (170) 5500
Peak torque Nm (Kgm - EC) at rpm (NORMAL) 115 (11.76) 3000 115 (11.76) 3000 120 (12.2) at 1750 230 (23.4) 2500
Peak torque Nm (Kgm - EC) at rpm (SPORT) 145 (14.8) at 2000 250 (25.5) 2500
Environmental classification Euro 6 Euro 6 Euro 6 Euro 5
Compression ratio 11.10 11.10 10.00 9.80
Supply Aspirated Aspirated ELECTRONIC INJECTION Timed sequential multipoint with knock control Turbocharged by means of exhaust gas turbocharger with engine load management by means of variable intake valve activation
Drive Front Front Front Front
Final drive ratio
6 + RM
Max. speed (km/h) 160 165 184 219
Acceleration (1 person + 30 kg) 0-100 km/h (s) 14.0 13.0 11.4 7.5
Urban 7.6 7.3 5.0 8.1
Extra-urban 4.7 4.6 3.8 4.8
Combined cycle 5.8 5.6 4.2 6.0
CO2 emissions (g/km), combined cycle 134 130 99 139