# Automotive acronyms and abbreviations

The following items are commonly used automotive acronyms and abbreviations:
* 5MT: 5-speed manual transmission
* A4: 4-speed automatic transmission
* A5: 5-speed automatic transmission
* A6: 6-speed automatic transmission
* ABS: Anti-lock braking system
* AC: Alternating Current
* A/C: Air conditioning
* ADAS: Advanced Driving Autonomous Systems
* ADB: Adaptive Driving Beam
* AdvHEV: Hybrid vehicle
* AGS: Adaptive transmission control
* AHC: Automatic height controller
* AMT: Automated manual transmission
* AFL: Adaptive front light
* AFS: Adaptive front-light system
* ALH: Adaptive LED Headlights
* ATLS: Automated truck loading systems
* Autogas: LPG when used as a vehicle fuel
* AVT: Antenna Amplifier Tuner
* AWD: All Wheel Drive
* BSM: Blind spot monitor
* CAB 1493: California Assembly Bill 1493
* CARB: California Air Resources Board
* CCP: Coupled cam phasing
* CH$_4$: Methane
* CNG: Compressed natural gas
* CO$_2$: Carbon dioxide
* CTS: Cruising & Traffic Support
* CVVL: Continuous variable valve lift
* CVT: Continuously variable transmission
* DAA: Driver Attention Alert
* DC: Direct current
* DCP: Dual cam phasing
* DCT: Dual clutch transmission
* DeAct: Cylinder deactivation
* dHCCI: Diesel homogeneous charge compression ignition
* DMV: California Department of Motor Vehicles
* DOHC: Dual overhead cam
* DRL: Daytime Running Lights
* DRSS: Distance Recognition Support System
* DSC: Dynamic stability control
* DVVL: Discrete variable valve lift
* DVVLd: Discrete variable valve lift, includes dual cam phasing
* DVVLi: Discrete variable valve lift, includes intake valve cam phasing
* eACC: Improved electric accessories
* EAT: Electronically assisted turbocharging
* EFI: Electronic Fuel Injection
* EGR: Exhaust gas recirculation
* ehCVA: Electrohydraulic camless valve actuation
* emCVA: Electromagnetic camless valve actuation
* EHPS: Electrohydraulic power steering
* EPB: Electronic Parking Brake
* EPS: Electric power steering
* EMFAC: ARB emission factors modeling software (EMFAC2007 v.2.3 November 1, 2006)
* ESC: Electronic stability control
* ESP: Electronic stability program
* EWP: Electric water pump
* EWP: Elevating work platform
* FDC: Fixed displacement compressor
* FWD: Front-wheel drive
* FTP: Federal test procedure
* g/mi: grams per mile
* GDI: Gasoline direct injection
* GDI-S: Stoichiometric gasoline direct injection
* GDI-L: Lean-burn gasoline direct injection
* gHCCI: Gasoline homogeneous charge compression ignition
* GHG: Greenhouse gas
* GT: Gran/Grand turismo
* GVW: Gross vehicle weight
* GVWR: Gross vehicle weight rating
* GWP: Global warming potential
* HAD: Highly Autonomous Driving
* HBC: High Beam Control
* HC: Hydrocarbons
* HEV: Hybrid-electric vehicle
* HFC: Hydrofluorocarbon
* hp: Horsepower
* HSDI: High-speed (diesel) direct injection
* HUD: Automotive head-up display
* ICP: Intake cam phaser
* IGN: Ignition
* ImpAlt: Improved efficiency alternator
* ISG: Integrated starter-generator system
* ISG-SS: Integrated starter-generator system with start-stop operation
* L4: In-line four-cylinder
* LDT: Light-duty truck
* LDT1: a light-duty truck with a loaded vehicle weight of up to 3750 pounds.
* LDT2: an LEV II light-duty truck with a loaded vehicle weight of 3751 pounds to a gross vehicle weight of 8500 pounds
* LED: Light Emitting Diode
* LEV: Low-emission vehicle
* LPG: Liquified petroleum gas
* LVW: Loaded vehicle weight
* MAC: Mobile air conditioning
* MDPV: Medium-duty passenger vehicle
* MDV: Medium-duty vehicle
* mg/mi: Milligrams per mile
* ModHEV: Moderate hybrid
* MT: Manual Transmission
* NMOG: Non-methane organic gas
* N$_2$O: Nitrous oxide
* NOx: Oxides of nitrogen
* PB: Power brakes
* PC: passenger car
* RPM: Revolutions Per Minute
* PS: Power steering
* R-134a: Refrigerant 134a, tetrafluoroethane (C$_2$H$_2$F$_4$)
* R-152a: Refrigerant 152a, difluoroethane (C$_2$H$_4$F$_2$)
* RCTA: Rear Cross Traffic Alert
* RPE: Retail price equivalent
* RWD: Rear Wheel Drive
* SULEV: Super ultra low emission vehicle
* SUV: Sport utility vehicle
* TBI: Throttle body injection
* TCS: Traction control system
* TRR: Tire rolling resistance
* TSR: Traffic Sign Recognition
* Turbo: Turbocharging
* ULEV: Ultra low emission vehicle
* V6: Vee-formation six-cylinder
* V8: V-formation eight-cylinder
* VDC: Variable displacement compressor
* VVT: Variable Valve Timing
* ZEV: Zero-emission vehicle
* 4WD: Four-wheel-drive
* 42V ISG: 42-volt integrated starter-generator system