In general, the longer and for more car models an engine is produced, the better its serviceability and availability of spare parts. Infiniti Q50 might be a better choice in this respect.
Hydraulic tappets:
no
yes
The BMW 5 series engine has hydraulic tappets (lifters), providing quieter operation and no need for periodic adjustment, but they are more complex in design and can cause serious engine damage in case of failure.
Dimensions
Length:
4.79 m
4.84 m
Width:
1.82 m
1.85 m
Height:
1.44 m
1.47 m
Both cars are similar in size. Infiniti Q50 is 5 cm shorter than the BMW 5 series, 3 cm narrower, while the height of Infiniti Q50 is 3 cm lower.
Trunk capacity:
500 litres
520 litres
Infiniti Q50 has 20 litres less trunk space than the BMW 5 series.
Turning diameter:
no data
11 meters
Power steering:
Electric power steering
Hydraulic power steering
Electric power steering is simpler, quieter, more fuel-efficient, more configurable and provides additional features such as auto-steering for lane assist and parking. The disadvantages of electric power steering are possible overheating under prolonged load conditions and insufficient feedback (feeling) during steering.
