Segment:
Compact premium hatchback.
Competitors:
Volkswagen Golf, Ford Focus, Fiat Punto, Peugeot 207.
Design Philosophy:
Iconic British styling with BMW engineering and driving dynamics.
Driving Experience:
Go-kart like handling, responsive steering, engaging driving experience.
Engine Mechanical:
Engine assembly, cylinder head, block, crankshaft, pistons, connecting rods, timing system, lubrication system, cooling system.
Engine Management:
Fuel injection, ignition system, emission control, engine control unit (ECU) diagnostics and repair.
Transmission Manual:
Clutch, gearbox assembly, internal components, shift mechanism, final drive.
Transmission Automatic:
Torque converter, gearbox assembly, hydraulic control system, electronic controls.
Suspension:
Front and rear suspension systems, struts, springs, control arms, bushings, alignment specifications.
Steering:
Power steering system, steering rack, column, linkages, troubleshooting.
Brakes:
Disc brakes (front and rear), ABS, EBD, brake system bleeding, pad and rotor replacement, caliper repair.
Electrical System:
Battery, charging system (alternator, starter), lighting, wiring diagrams, fuses, relays, body control module (BCM).
HVAC:
Air conditioning system, heating, ventilation, blower motor, refrigerant charging, troubleshooting.
Body And Interior:
Body panels, doors, windows, locks, seats, trim, interior components, diagnostics.
Maintenance:
Routine maintenance tasks, oil changes, filter replacements, spark plug replacement, belt inspection and replacement.
Repair:
Detailed step-by-step repair procedures for all major mechanical and electrical components.
Troubleshooting:
Diagnostic procedures, symptom-based troubleshooting guides, error code interpretation.
Diagnostics:
Use of diagnostic tools, scanning for fault codes, data stream analysis.
Component Removal Installation:
Comprehensive instructions for removing and installing virtually every component.
Depth:
Comprehensive, covering basic maintenance to complete engine and transmission rebuilds, including electrical schematics and diagnostic procedures.
One Transmission:
5-speed manual transmission.
Cooper Transmission:
5-speed manual transmission.
One Optional Transmission:
Continuously Variable Transmission (CVT) available on some models.
Cooper Optional Transmission:
6-speed manual transmission (later models), CVT.
Transmission Fluid:
Refer to manual for specific fluid type and capacity (e.g., Pentosin ATF 4400 for CVT).
Oil Change Interval:
Typically 10,000-15,000 miles or 12-24 months, depending on driving conditions (refer to manual).
Spark Plug Replacement:
Refer to manual, often around 60,000 miles for standard plugs.
Engine Oil Type:
BMW Longlife-01 (LL-01) SAE 5W-30 or 0W-30 synthetic oil.
Coolant Type:
BMW Blue Ethylene Glycol based coolant (G48).
Common Faults:
Power steering pump failures, clutch wear, alternator failure, radiator fan issues, oil leaks (valve cover, oil pan), thermostat housing leaks.