Turbo Lag
Turbo lag is the delay between pressing the accelerator and the turbo producing full boost.
What is Turbo Lag?
It is most noticeable at low revs. Smaller turbos, twin-scroll housings and variable geometry reduce lag. Mild-hybrid and electric compressors can fill the gap. Selecting a lower gear keeps revs higher and reduces lag when quick response is needed, for example when overtaking.
How it works
The turbine needs enough exhaust flow to spin up before boost rises.
Why it matters for your car
Normal lag is a design trait; sudden increases point to boost leaks or turbo problems. Check boost readings in live data.
Other terms
- Barn Find
- Brake Fluid Test
- Choke (Cold Start Enrichment)
- Cooling System Bleeding
- CV Boot
- Driveline Clunk
- Heated Windscreen
- Intelligent Battery Sensor (IBS)
- OBD-II
- Paintless Dent Repair (PDR)
- Parallel Parking
- Scrub Radius
- Side Airbag
- Smart Charging (Alternator Control)
- Torque Converter Lock-up Clutch
- Upholstery Cleaning
- Wheel Alignment
- Wheel Runout
- Window Tint (Tinted Glass)
- WLTP (Worldwide Harmonised Light Vehicles Test Procedure)