Porsche 911 911 Carrera · Petrol turbo · Automatic (DCT)

Front, side and curtain airbags: six in total.

Brakes individual wheels to help keep the car on course if it starts to skid.

ABS stops the wheels locking under hard braking so you can still steer. EBD balances braking force between the wheels.

Holds the car for a moment on a slope so it doesn't roll back as you move off.

Metal points in the back seat that lock a child seat firmly in place.

Warns you when a tyre is losing air.

Disc brakes on all four wheels, instead of drums at the back.

Driver aids that use a camera, and on some cars radar, such as automatic emergency braking and lane keeping. The exact functions vary by car.

Cruise control that slows down and speeds up to keep a set gap from the car ahead.

Warns you when a vehicle is in your blind spot as you change lanes.

An infrared camera picks out people and animals in the dark and shows them on a screen.

Beeps faster as you reverse closer to something behind the car.

Beeps when you get close to something in front, useful in tight parking.

Shows the view behind the car on the screen when you reverse.

Cameras around the car show a top-down view, making tight parking easier.

A wiper for the rear glass.

Heats the rear glass to clear mist.

Wipers start by themselves when it rains and adjust their speed.

The inside rear-view mirror dims by itself to cut glare from headlights behind you.

The outside mirrors fold in and out electrically at the press of a button.

The outside mirrors fold in by themselves when you lock the car.

Turn indicators built into the outside mirrors, so traffic beside you sees you turning.

Headlamps that use LEDs, giving whiter light than older halogen bulbs.

Headlamps switch on by themselves when it gets dark or you enter a tunnel.

Low-mounted lamps that help you see and be seen in fog and heavy rain.

Extra lamps light up the side of the road as you turn.

Smart headlights that keep high beam on while dimming only the part that would dazzle others.

Wheels made of aluminium alloy instead of steel, usually lighter than steel wheels.

Cools the cabin.

Air-conditioning vents for the people in the back seat.

Separate temperature settings for four or more parts of the cabin.

Front seats that blow air through small holes to keep you cool.

Front seats that warm up in cold weather.

Rear seats that warm up in cold weather.

Seats with built-in massage.

Adjust the front seats with electric switches.

Saves your seat position so one press brings it back.

Sports seats with many electric adjustments that hold you in corners.

A steering wheel that warms up in cold weather.

Adjust the steering wheel position with a switch.

A glass panel in the roof that lets in light. It may not open: see Opening sunroof.

A roof glass panel that slides or tilts open.

Soft mood lighting around the cabin at night, often in a colour you choose.

Doors pull themselves gently shut once nearly closed.

Filters or ionises the air inside the cabin.

Blinds for the rear windows to keep out the sun.

A touchscreen in the dashboard for music, navigation and phone connection.

Speakers for music and calls.

Change the volume or take calls without taking your hands off the wheel.

A branded sound system, such as Burmester, Harman Kardon, Bose or Bang & Olufsen.

Links the car to a phone app, for example to check where it is or lock it remotely. Functions vary by car.

Charge a compatible phone by placing it on a pad, no cable needed.

Shows your speed and other driving information in your line of sight, on the windscreen or on a small glass panel above the dashboard.

A head-up display that places arrows and guidance over the real road ahead.

A separate screen for the front passenger.

Lock and unlock the doors with a button on the key.

Unlock the car by touching the door handle while the key stays in your pocket.

Start the engine with a button instead of turning a key.

Holds a set speed on the highway without you pressing the accelerator.

The boot lid opens and closes electrically at the press of a button.

A switch replaces the handbrake lever, and auto hold keeps the car still at signals without you holding the brake.

Switches the engine off at signals and restarts it when you move off, saving fuel.

Four-wheel drive with an extra-low gear range for steep, rough or slippery tracks.

Locks the wheels on an axle together, so power still reaches the wheel that has grip.

Holds a slow, steady speed down steep slopes without you touching the brakes.

Switchable modes, such as Eco, Sport or Mud, that change how the car responds.

Air springs instead of steel ones, so the ride adjusts to the road and the load.

Shock absorbers that switch electronically between comfort and firmer, sportier settings.

The rear wheels steer slightly too, for a tighter turning circle and steadier lane changes.

Keeps the body flatter in corners by actively controlling lean.

Varies power or braking between the wheels to help the car turn in sharply.

Very high-performance brakes that keep working under repeated hard use.

Brake discs with a hard coating for less dust and wear.

An exhaust tuned for a louder, sportier sound.

Porsche's package of sharper drive modes, a mode switch and launch control.

A small battery and motor help the engine and can save a little fuel. It can't drive the car on electricity alone.

Charges at up to 22 kW from a three-phase AC charger, faster than a standard on-board charger. On single-phase power it is no faster.

Warms the cabin using less battery power than an ordinary heater, so range drops less in cold weather.

An electric car plays a synthesised driving sound in the cabin.