There are several vacuum hoses on a 1995 Mercedes - Benz C280; with most of them located on top and behind the throttle body. (yourmechanic.com)
-- 52,686 units of the Maruti Swift and Baleno recalled — Recall for inspection of a possible issue with brake vacuum hose — Company to conduct the inspection and replacement of the faulty part free of charge (motorbeam.com)
At first I thought this might be something to do with the brake booster vacuum hoses but the issue does not happen when I reverse and brake. (mechanics.stackexchange.com)