The Start/Stop system is one of the most common features in modern vehicles, designed to reduce fuel consumption and harmful emissions. Despite its good intentions, it’s not always convenient for every driver.


What is the Start/Stop system?

Start/Stop is a technology that automatically shuts off the engine when the vehicle is at a standstill (e.g., at a traffic light) and restarts it when the driver presses the clutch (in manual transmissions) or releases the brake (in automatics).

The system aims to:

  • Reduce fuel consumption in urban conditions

  • Lower exhaust emissions

  • Improve the vehicle’s environmental footprint


What are the actual benefits?

In situations with frequent stopping and starting (such as in traffic), the system saves fuel — especially in petrol and hybrid vehicles. It also helps vehicles comply with environmental standards such as EURO 6.


What are the disadvantages of Start/Stop?

The Start/Stop system isn’t always as helpful. Here are the main reasons why some drivers want it deactivated:

  • Discomfort in heavy traffic – the constant starting and stopping of the engine causes discomfort and creates a feeling of instability

  • Unnecessary strain on the starter and battery – shortens their lifespan, especially in frequent stop-start conditions

  • Inconvenience during winter – when the engine shuts off, so does the heating, which is a problem in cold weather

  • More maintenance – AGM/EFB batteries are expensive, and the system can cause issues during diagnostics or battery replacement without BMS reset

  • Delay when setting off – a slight delay in restarting the engine can be unpleasant during maneuvers or at intersections


Why disabling Start/Stop makes sense

Many drivers decide to disable Start/Stop once they realize that:

  • The benefit is minimal for their driving style

  • The sense of control over the vehicle is reduced

  • It creates real-life inconveniences, especially in city driving

It’s important to note that in some vehicles, the Start/Stop system activates automatically every time the engine starts — meaning it cannot be permanently turned off without a software solution.


How is the Start/Stop system disabled?

There are two main approaches:

1. Software deactivation (Start/Stop OFF)

  • The cleanest method – permanent disabling of the function via the ECU

  • No hardware tampering or hidden buttons required

  • Doesn’t affect other systems in the vehicle

2. Emulation with adapter (for certain models)

  • A hardware adapter is installed, which “simulates” a pressed button to disable the function

  • The result is that the system does not activate upon engine start

  • No software intervention required, but less reliable


Start/Stop OFF by CarHack

If you’re looking for smoother, more reliable, and more convenient driving, disabling the Start/Stop system might be the right solution for you — especially with the help of an expert team like CarHack.

In addition to Start/Stop OFF, we offer professional solutions for:

  • DPF removal: Deleting the diesel particulate filter for improved efficiency

  • EGR and swirl flap removal: Enhancing engine performance and longevity

  • Rear oxygen sensor removal: Fine-tuning your vehicle’s air-fuel ratio

  • AdBlue removal: Disabling AdBlue systems in diesel vehicles

  • BMS reset: Battery management system reset for improved function

  • DTC and EVAP removal: Clearing diagnostic trouble codes and evaporative emission systems

  • OPF removal: Optimizing petrol engines by removing particulate filters

Contact us for a free consultation or explore our services online.