For servicing, brakes, batteries and most diagnostics, a mobile mechanic like Drova is usually the same price or cheaper than a high-street garage — because there's no premises overhead and no second trip for you. Where a garage wins is jobs needing a four-post lift (clutches, gearboxes, full exhaust systems).
The bigger saving is your time. A standard service at a garage costs you a morning of dropping off and an afternoon of collecting. Mobile means you carry on with your day while the work happens on your driveway.
What Drova won't do: bodywork, structural welding, gearbox internals or anything that needs the car in the air on a lift. For those we'll point you at a trusted local garage rather than dabble.