well, if you talking about car porch than you should get are "Rough surface" tiles, as that was area that rain / water and your car parking area, you didn't want to have a smooth layer.

Not only should non-slip, high mechanical strength tiles be considered, smaller-sized tiles with more grout lines may provide additional slip resistance and can be another option.

You can just ask them to recommending car porch tile with your prefer colour, with only Grey will really look dark, maybe mixed with Venilla colou?

Use high Pressure water loh

Ya using that with large amount of water and we are talking about caring for the environment. Conservation of water resources

Perhaps a photo about your tile?

Ofcause the Rough surface are not those are commecial used type lol

concrete imprint perhaps?

DIY?
The guys who made the concrete imprint didn't put the sealer for you?

comparing concrete acid stain & concrete imprint, which is cheaper & less maintenance needed?

if using tiles, is it very hard to clean when some of the oil drop on it?

FYI, my house has concrete imprint done by the developer. No matter how good is the workmanship, you will see hair line crack soon or later. In my case, the crack is up to 4mm wide.
No doubt it does look good and lasting.