Cleaning Exhaust Soot Off Brick Walls

[Citroënbender]

Pretty much as the title says, unpainted brickwork stained from cars backing up to it, or the initial blast of soot when they start back up after being parked.

Will something like Kenco degreaser shift this in conjunction with pressure washing? Doesn’t need to look like new, just well-maintained 20+ years old. This is my job for Sunday, cleaning the workshop forecourt!

Ideally fishing for recommendations that are budget friendly due to surface area (so, not high end detailing products), can be applied in a timely manner and are readily bought. Also, products can’t be too far either way on the pH scale due to risk of efflorescence or corroding ties.