G Meter
G Meter
The g-meter is one of our most popular and most straightforward brake testers.
g-meter is the ideal choice for garages and MOT test centres and was originally designed for carrying out statutory annual MOT brake performance testing. It is DVSA-approved by the GEA, including for data transfer with the MOT Testing Scheme (MTS). It is also TÜV Rheinland certified. Suitable for the MOT brake testing of all classes of vehicles (Class III, IV, V, VI & VII vehicles in accordance with the Motor (Tests) Regulations 1981, as amended) the g-meter is practical, reliable and straightforward to use. It can also be used for testing heavy goods vehicles (HGVs) in accordance with the Goods Vehicles (Plating and Testing) Regulations 1988, as amended.
Product Description
Small, lightweight and self-aligning, it will automatically detect the vehicle’s direction of travel. This makes it quick and easy to use, as it doesn’t need to be accurately aligned – ideal if testing large volumes of vehicles in a test centre.
The g-meter measures peak and mean acceleration, as well as stopping time and calculating the stopping distance. Braking efficiency can be measured in %g or in m/s2.
The test reading is shown on a bright LED display. It is clear and easy to read, even in bright sunlight. It also retains the results of the most recent test in its memory. This data will be retained even if the instrument is turned off and will display until it is used to carry out a new test.
If you would like to record more than one set of test data on the device, take a look at our g-meter+.
How it Works
The g-meter is our smallest brake testing unit, it uses a small on-board accelerometer to measure g force during a brake test to calculate the braking capabilities of a vehicle.
Have Questions? Get in Touch
What is a G-Meter and what does it measure?
A G‑Meter is an instrument used to measure vehicle acceleration and deceleration (g-forces). It is commonly used in automotive testing to evaluate braking performance, cornering behavior, and overall vehicle dynamics.
What parameters can a G-Meter capture?
A G-Meter measures:
- Longitudinal acceleration (braking & acceleration)
- Lateral acceleration (cornering forces)
- Peak g-values
- Time-based acceleration profiles
These parameters are essential for vehicle performance analysis and safety validation.
How does a G-Meter work?
A G-Meter uses internal accelerometers to detect motion along different axes. The data is processed in real time to provide accurate g-force readings, which can be logged and analyzed for testing purposes.
Where is a G-Meter typically used?
Common applications include:
- Brake testing and stopping performance analysis
- Vehicle dynamics and handling studies
- Motorsport performance evaluation
- Ride comfort and NVH-related studies
What are the key benefits of using a G-Meter?
Key advantages include:
- Simple and quick setup
- Real-time measurement of vehicle forces
- Portable and cost-effective solution
- Useful for initial testing, validation, and diagnostics