• New real-engine catalog: start a build from 317 real engines, including the Toyota 2JZ, Nissan RB26, Honda F20C and BMW S54, with their published bore, stroke, compression and firing order. 20 are free; Pro opens the rest. • Each engine now keeps its own turbo, and Build Bench has an optional exhaust pipe that adds a subtle resonance to the sound. • Challenges start with an Up next card that shows the next medal to chase. • Better fuelling: engines pull cleanly to the shift point, and the automatic gearbox no longer upshifts on wheelspin. Medal targets are updated to match. • Fixed: pops when revving a turbo engine, and crashes in the iPad cockpit and the iPhone More list. On iPhone, the extra tools now live in the Lab Tools tab.

• New Challenges: build a car to a brief, run it on the simulated test track and earn medals, with Game Center leaderboards. • New Vehicle tab: put your engine in a 3D car with a gearbox, driven wheels, tyre slip and working brakes. • New experimental turbo with spool, wastegate, intercooler and knock control, and boost on Drive. • More to tune: port fuel injection, custom cams, headers, runner lengths, throttle body and crankshaft types. • Dyno pulls now run on the physics, and Live graphs show temperature and fuel for every cylinder. • One redesigned Drive cockpit on iPhone and iPad, with brake, throttle and hold to rev. The rev limiter now cuts fuel too.

• New 3D engine view, generated from the live simulation for every engine, including your own builds. Orbit, zoom, slow it down, and tap any part for live readings. The classic 2D cutaway is one tap away. • New Build Bench: design an engine from a single to a V12 and hear it as you build, with hold to rev, exhaust choices and A/B comparison. • Built-in and custom engines now fire on every cylinder and rev freely, and singles idle steadily. • Drivetrain: a 3D gearbox and a gearing chart with top speed in each gear. The manual gearbox now refuses downshifts that would over-rev the engine. • Now in Swedish, Danish, Norwegian, Finnish, Indonesian, Thai, Vietnamese, Hindi, Ukrainian and Romanian.

• Switch engines without leaving the Drive screen: tap the engine name, or use the new Engine card in Engine Controls. • Fixed on iOS 18: the engine bar covered the tab bar, so you couldn't reach Garage or the other tabs. • Fixed on iOS 18 and iPad: the end of each page was hidden behind the engine bar.

• New experimental Track tab (early preview): replay a lap through your engine, using the built-in Lab Circuit or your own GPX, GeoJSON or CSV file. • Redesigned controls, lower audio latency and a faster, smoother interface. • More reliable idle and startup behavior across custom engine layouts. • Saved engine edits now refresh previews correctly, so changes to bore, stroke, and tuning are heard immediately. • Smoother, more stable audio for complex engines with improved realtime load handling. • Clearer, less disruptive Build Bench previews and audio diagnostics while tuning.

Important bug fix: Fault Lab can no longer arm itself when you select a fault mode. Fault injection is now opt-in, restored experiments stay disarmed until explicitly enabled, and active faults are visible with a one-tap Clear control. Improved fault telemetry and per-cylinder misfire targeting.

• Smoother floating engine controls with faster swipe response on iPhone and iPad. • Cleaner Drive and Drivetrain screens with less visual clutter. • Experimental tools are now clearly labeled, with clearer dyno and fault feedback. • Improved engine telemetry, saved state, and custom engine workflows. • Garage previews now show generated V engines with the same complete bank, piston, and connecting-rod geometry as Drive.

• Smoother floating engine controls with faster swipe response on iPhone and iPad.\n• Cleaner Drive and Drivetrain screens with less visual clutter.\n• Experimental tools are now clearly labeled, with clearer dyno and fault feedback.\n• Improved engine telemetry, saved state, and custom engine workflows.