Last Update: Jun. 25, 2019, 5:00 a.m.
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What is Better Alfa Romeo 156 or Citroen C6?

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Alfa Romeo 156 Citroen C6

12 reasons to buy Alfa Romeo 156

Engine and transmission
More cylinders 6 vs 4 2 more cylinders. The more cylinders = the less vibration and the engine runs more smoothly.
Piston diameter larger 93 mm vs 85 mm 9% or 8 mm larger. The larger diameter of cylinder = the greater filling ratio. Cons: increase emissions of toxic substances.
More engine power

250 bhp vs 173 bhp

184 kw. vs 129 kw.

31% or 77 bhp. More power of car = more top speed.
Performance
Faster acceleration from 0 to 60 mph 6.3 sec. vs 9.5 sec. 3.2 sec.
More top speed 155 mph vs 135 mph 20 mph
Fuel consumption
Less fuel consumption (Combined cycle) 23 mpg vs 42.83 mpg 86% or 19.83 mpg
Less fuel consumption (Highway) 32.11 mpg vs 52.33 mpg 63% or 20.22 mpg
Less fuel consumption (City) 15.4 mpg vs 32.51 mpg 111% or 17.11 mpg
Emissions
Less noise level 74 dB vs 75 dB 1% or 1 dB
Weight and capacity
More maximum bearing capacity 495 kg vs 460 kg 7% or 35 kg
Other specs
Less weight 1460 kg vs 1820 kg 25% or 360 kg Weight of the vehicle affects: fuel consumption, acceleration dynamic, braking distance, etc.
Less turning radius 12.1 meters vs 12.43 meters 3% or 0.33 meters

10 reasons to buy Citroen C6

Engine and transmission
Better compression 16.6 vs 10.5 37% or 6.1 . The greater degree of compression = the less fuel need to produce the same power.
Piston stroke longer 96 mm vs 78 mm 19% or 18 mm. The longer stroke = lower fuel consumption and fewer emissions.
More torque 370 nM vs 300 nM 19% or 70 nM. More torque = faster acceleration.
Emissions
Less CO2 emissions 109 g/mile vs 182 g/mile 67% or 73 g/mile
Higher european emission standard EURO 4 vs EURO 3 1 generation
Weight and capacity
More minimum boot capacity 488 liters vs 360 liters 26% or 128 liters
More capacity of fuel tank 72 liters vs 63 liters 13% or 9 liters
More maximum allowable weight 2280 kg vs 1955 kg 14% or 325 kg
More maximum towing weight with brakes 1700 kg vs 1400 kg 18% or 300 kg
Warranty
More warranty against corrosion 12 years vs 8 years 33% or 4 years

Neutral reasons Alfa Romeo 156 vs. Citroen C6

Engine and transmission
Engine speed (RPM) 6200 RPM vs 4000 RPM 35% or 2200 more rpms.
Engine capacity 3179 cm3 vs 2179 cm3 31% or 1000 cm3 more
Engine position Front transverse vs Front transverse
Cylinders location V6 vs In line
Camshaft DOHC vs DOHC
Fuel supply Distributor fuel injection vs With a twin-turbocharged
Turbocharging Yes vs Yes
Dimensions
Length 4430 mm vs 4908 mm 10% or 478 mm shorter
Width 1745 mm vs 1860 mm 6% or 115 mm narrower
Height 1430 mm vs 1464 mm 2% or 34 mm lower
Wheels and tires
Wheelbase 2595 mm vs 2900 mm 11% or 305 mm less
Front tires size 215/45R17 vs 225/55 R17
Rear tires size 215/45R17 vs 225/55 R17
Spare wheel puncture repair kit vs 225/55 R17
Type of wheels 7.5Jx17" alloy wheels vs 17" alloy wheels
Style of wheels 5 bolt holes vs RIVAZZA
*Specs may vary depending on configurations and year of production(taken parameters of last released versions)