• Turbo: add a turbo to any engine — a whistle that builds with boost and a pssh when you lift off • Pops & bangs: crackles on lift-off and downshifts (Off / Mild / Wild) • Rev-matching blips on downshifts • Tap a locked engine and buy — it switches to that engine right away • Engines now sound heavier under throttle; the V8 is retuned for a deeper American rumble • Previews now play an in-gear pull instead of a rev blip • 3D: intake (blue) and exhaust (red) valves color-coded, intake manifolds on inline engines, rotary spark plugs moved to the side • Store page updated for all 12 engines

• 7 new engines (12 in total): superbike inline-4, V-twin, flat-4 boxer, V12, two-stroke single, a 4.8L supercar V10 and a 5.9L grand-tourer V12 • More realistic sound: exhaust pipe resonance, valve and gear noise, and a thicker growl under load • Every new engine has a 3D cutaway and an easy explanation, with example cars and bikes • The "All Engines" unlock now includes all new engines

• Fixed a crash when switching engines. • New Learn tab with 3D cutaway models of all five engines — watch pistons, valves and the rotary's rotor move, step through the four strokes, and tap any part to learn what it does. • Spin the 3D engine with your finger — the sound revs with your spin. • How the wheels turn: a 3D drivetrain from engine to tires inside a see-through car. Change gears and take a corner. • The gear indicator stays in gear at a stop, and the app switches to GPS automatically on CarPlay.