Last Update: May. 23, 2019, 5:10 a.m.
Home >>> >>> Alfa Romeo 156 and BMW Z4

What is Better Alfa Romeo 156 or BMW Z4?

Exterior

Alfa Romeo 156 BMW Z4

14 reasons to buy Alfa Romeo 156

Engine and transmission
Piston diameter larger 93 mm vs 82 mm 12% or 11 mm larger. The larger diameter of cylinder = the greater filling ratio. Cons: increase emissions of toxic substances.
More engine power

250 bhp vs 204 bhp

184 kw. vs 150 kw.

18% or 46 bhp. More power of car = more top speed.
More torque 300 nM vs 250 nM 17% or 50 nM. More torque = faster acceleration.
Performance
Faster acceleration from 0 to 60 mph 6.3 sec. vs 7.3 sec. 1 sec.
More top speed 155 mph vs 149 mph 6 mph
Fuel consumption
Less fuel consumption (Combined cycle) 23 mpg vs 34.4 mpg 50% or 11.4 mpg
Less fuel consumption (Highway) 32.11 mpg vs 46.27 mpg 44% or 14.16 mpg
Less fuel consumption (City) 15.4 mpg vs 23.91 mpg 55% or 8.51 mpg
Weight and capacity
More minimum boot capacity 360 liters vs 310 liters 14% or 50 liters
More capacity of fuel tank 63 liters vs 55 liters 13% or 8 liters
More maximum allowable weight 1955 kg vs 1760 kg 10% or 195 kg
More maximum bearing capacity 495 kg vs 330 kg 33% or 165 kg
Warranty
More warranty against corrosion 8 years vs 6 years 25% or 2 years
Other specs
More seats 5 vs 2 3

7 reasons to buy BMW Z4

Engine and transmission
Better compression 11 vs 10.5 5% or 0.5 . The greater degree of compression = the less fuel need to produce the same power.
Piston stroke longer 78.8 mm vs 78 mm 1% or 0.8 mm. The longer stroke = lower fuel consumption and fewer emissions.
Emissions
Less CO2 emissions 119 g/mile vs 182 g/mile 53% or 63 g/mile
Higher european emission standard EURO 5 vs EURO 3 2 generations
Warranty
More standard warranty - Mileage 994406 miles vs 62150 miles 94% or 932256 miles
Other specs
Less weight 1430 kg vs 1460 kg 2% or 30 kg Weight of the vehicle affects: fuel consumption, acceleration dynamic, braking distance, etc.
Less turning radius 10.7 meters vs 12.1 meters 13% or 1.4 meters

Neutral reasons Alfa Romeo 156 vs. BMW Z4

Engine and transmission
Engine speed (RPM) 6200 RPM vs 6400 RPM 3% or 200 less rpms.
Engine capacity 3179 cm3 vs 2497 cm3 21% or 682 cm3 more
Cylinders location V6 vs In line
Camshaft DOHC vs DOHC
Fuel supply Distributor fuel injection vs Distributor fuel injection
Turbocharging Yes vs Yes
Dimensions
Length 4430 mm vs 4239 mm 4% or 191 mm shorter
Width 1745 mm vs 1790 mm 3% or 45 mm narrower
Height 1430 mm vs 1291 mm 10% or 139 mm higher
Wheels and tires
Wheelbase 2595 mm vs 2496 mm 4% or 99 mm more
Front tires size 215/45R17 vs 225/45 R17
Rear tires size 215/45R17 vs 225/45 R17
Spare wheel puncture repair kit vs flat tires
Type of wheels 7.5Jx17" alloy wheels vs 17" alloy wheels
Style of wheels 5 bolt holes vs star shaped spokes Style 290
*Specs may vary depending on configurations and year of production(taken parameters of last released versions)