National breakdown provider Green Flag is enhancing its roadside capabilities by rolling out Hella Gutmann’s new mega macs S 20 diagnostic tool across its owned fleet of patrol vehicles. Compact, powerful and easy to use, the S 20 supports Diagnostics over Internet Protocol (DoIP), CAN-FD, and offers built-in access to vehicle manufacturer security gateways – crucial for working on today’s cyber-secure vehicles.
Enabling technicians to diagnose and resolve complex faults at the roadside, the S 20 strengthens Green Flag’s ability to keep drivers moving. Whether it’s a quick fix on the spot or identifying the most suitable repair destination, the advanced diagnostic tool provides the data needed to make fast, informed decisions.
“The mega macs S 20 provides the diagnostic insight needed to quickly assess vehicle faults,” said Julian Goulding, Head of Garage Equipment at Hella Gutmann. “It helps maximise first-time fixes and streamlines onward recovery where workshop intervention is required.”
Green Flag’s investment underscores the company’s commitment to delivering smart, tech-enabled roadside assistance and gives motorists peace of mind that their recovery operator is equipped to handle the latest vehicle systems.

“Our patrol technicians need to quickly and accurately assess a wide variety of vehicles every day, so having the right diagnostic tools on board is essential to delivering a fast and efficient service,” said Damon Jowett, Director of Customer, Roadside & Network Services.
Launched earlier this year, the mega macs S 20 connects wirelessly via Bluetooth or USB-C to Android devices, delivering fast and flexible diagnostics wherever it’s needed.
To support the deployment, Hella Gutmann delivered a ‘train-the-trainer’ programme, ensuring Green Flag’s technical leads can pass on in-depth knowledge of the system. The rollout will continue in phases, with additional units and support provided as Green Flag’s owned fleet grows.
For a limited time, the S 20 is available for £2,150 + VAT (reduced from £2,450), including a rugged Android tablet and two years of software updates.
For more details, contact your local Hella Gutmann distributor or visit https://www.hella.com/techworld/uk/Workshop-equipment/Diagnostic-solutions/mega-macs-S-20-101974/.