Automotive Fakery

[MXRod]

Exhaust vents in the rear bumper/trim of an E Golf

[SlimJim16v]

NDNDNDND said:

Ok, can you explain how this:

reduces drag at the back of the car? Without a flat floor to clean up the airflow before the diffuser (as on the GP2 above) it looks to me more like an air scoop than a useful aerodynamic device.

Yes, I would bet the drag would be improved by throwing most fake diffusers in the bin. Making that fake vent above it functional would help too, letting all that trapped air out.

[PH User]

SlimJim16v said:

NDNDNDND said:

Ok, can you explain how this:

reduces drag at the back of the car? Without a flat floor to clean up the airflow before the diffuser (as on the GP2 above) it looks to me more like an air scoop than a useful aerodynamic device.

Yes, I would bet the drag would be improved by throwing most fake diffusers in the bin. Making that fake vent above it functional would help too, letting all that trapped air out.

With the push for efficiency it's unlikely that a manufacturer would want it if all it did was add drag.

[SlimJim16v]

PH User said:

With the push for efficiency it's unlikely that a manufacturer would want it if all it did was add drag.

I think we've seen, in all things, that image and looks trump everything. As this thread shows.

[PH User]

SlimJim16v said:

PH User said:

With the push for efficiency it's unlikely that a manufacturer would want it if all it did was add drag.

I think we've seen, in all things, that image and looks trump everything. As this thread shows.

Does it matter if people like something for the way it looks?

Neither of us know if that adds to the drag of the car.

[anonymous-user]

It’s not really any different from Ricers other than it’s factory fitted rather than bought Halfords or eBay.