Automotive acronyms and abbreviations

• 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
• AHC: Automatic height controller
• AMT: Automated manual transmission
• AFL: Adaptive front light
• AFS: Adaptive front-light system
• ATLS: Automated truck loading systems
• Autogas: LPG when used as a vehicle fuel
• AWD: All Wheel Drive
• CAB 1493: California Assembly Bill 1493
• CARB: California Air Resources Board
• CCP: Coupled cam phasing
• CH₄: Methane
• CNG: Compressed natural gas
• : Carbon dioxide
• CVVL: Continuous variable valve lift
• CVT: Continuously variable transmission
• 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
• 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
• 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-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
• HC: Hydrocarbons
• HEV: Hybrid-electric vehicle
• HFC: Hydrofluorocarbon
• hp: Horsepower
• HSDI: High-speed direct injection
• 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
• NMOG: Non-methane organic gas
• N₂O: Nitrous oxide
• NOx: Oxides of nitrogen
• PB: Power brakes
• PC: passenger car
• RPM: Revolutions Per Minute
• PS: Power steering
• R-134a: Refrigerant 134a, tetrafluoroethane
• R-152a: Refrigerant 152a, difluoroethane
• RPE: Retail price equivalent
• RWD: Rear Wheel Drive
• SULEV: Super ultra low emission vehicle
• SUV: Sport utility vehicle
• TBI: Throttle body injection
• TRR: Tire rolling resistance
• Turbo: Turbocharging
• ULEV: Ultra low emission vehicle
• V6: Vee-formation six-cylinder
• V8: V-formation eight-cylinder
• VDC: Variable displacement compressor
• ZEV: Zero-emission vehicle
• 4WD: Four-wheel-drive
• 42V ISG: 42-volt integrated starter-generator system