Mechanics at Hedin Mercedes-Benz dealerships are being balloted for strike action over pay.
The mechanics are responsible for Mercedes repairs, MOTs and servicing across the capital.
The Unite Union says its members are angry that the company is refusing to put forward any pay offer for 2025.
Strike action would impact Hedin customers across its four sites in Brooklands in Weybridge, Bromley, Croydon and Dartford.
