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Look under the hood
Curious how a car really works? Explore every part through clear diagrams, cutaways and simple, jargon-free explanations.
The car with no secrets
See a car in cross-section — from engine to suspension
- 1 Engine
- 2 Transmission
- 3 Cabin
- 4 Fuel tank
- 5 Exhaust system
- 6 Suspension & brakes
- 7 Airbags
The full diagram is available for ICE, hybrid, and electric cars
See all parts in cutawayCatalog sections
Pick a section to explore the car's construction in detail
General overview
Core systems and components of a car and how they connect to each other.
Open sectionCutaway views
Cross-section illustrations of a car with key assemblies labeled.
Open sectionEngine: construction and types
Engine types and how they are built: cylinders, pistons, valves, plus the fuel, cooling and lubrication systems.
Open sectionTransmission: construction and types
Manual, automatic, dual-clutch gearboxes, CVT, and the EV reduction gear.
Open sectionSuspension: types and construction
Suspension parts: shock absorbers, springs, control arms and stabilizers.
Open sectionBrake system: construction and types
Disc and drum brakes, hydraulics, ABS and supporting systems.
Open sectionInterior layout
Dashboard, seats, controls and comfort features.
Open sectionLighting & fuses
All bulb types, headlight diagrams and complete fuse information.
Open sectionTires & wheels
Tire types and tread, wheel rims, and how grip changes with road surface and weather.
Open sectionSteering system
How the wheel turns the road wheels: rack-and-pinion, power assist, tie rods and steering knuckle.
Open sectionSafety & driver assistance
Airbags, belts and crumple zones, ABS and ESP, and the radar and cameras behind modern driver aids.
Open sectionElectrical system & charging
The 12V battery, alternator and starter, plus the high-voltage pack, inverter and everything behind plugging an EV in.
Open sectionClimate & HVAC
How the cabin gets cooled, heated and dried out: the refrigerant loop, the blower and vents, and why EVs increasingly use a heat pump.
Open sectionAbout this project
A free, illustrated guide to how cars work — no ads, no trackers, no sign-up. Written in plain language for people who are curious rather than trained.