Verdict
The RZ has a 46% bigger boot, the RZ is 17% more powerful, while the RZ is about 10% cheaper. Weigh that against the equipment each side gives you in the table below.
What the Z4 has over the RZ
What the RZ has over the Z4
Based on the published spec sheets of the selected variants — a blank field on one side can also mean unlisted data.
The RZ's wheelbase is 380 mm longer, which usually translates to more rear legroom. Boot space favours the RZ: 522 litres against 280.
Representative body-type outlines, drawn to scale from each car's length and height.
| Price & overview | ||
|---|---|---|
| Price | RM475,230 | RM429,888✓ |
| Body type | Convertible | SUV |
| Segment | Sports Car | Compact Executive |
| Assembly | CBU | CBU |
| Ownership | ||
| Road tax / year | RM379 | RM335✓ |
| Monthly instalment (est.) | RM4,850/mo | RM4,390/mo✓ |
| Insurance / year (est.) | RM12,669 | RM11,425✓ |
| Fuel or electricity / year (est.) | RM2,587 | RM1,442✓ |
| Energy cost / 100 km (est.) | RM12.94 | RM7.21✓ |
| 5-year running costs (est.) | RM78,175 | RM66,009✓ |
| Charging (estimated) | ||
| AC charge 0–100% (est.) | — | 6.5 hours |
| DC charge 10–80% (est.) | — | 35 min |
| Powertrain | ||
| Engine Tech | 16-valve DOHC, direct fuel injection, twin-scroll turbo with variable valve timing | 400V architecture |
| Capacity | 1,998 cc | — |
| Horsepower | 255 hp at 5,000 rpm | — |
| Torque | 400 Nm at 1,550 rpm | — |
| Cylinder Arrangement | Inline 4 | — |
| Fuel | Petrol | Electric |
| Bore × Stroke | 82 mm × 94.6 mm | — |
| Compression Ratio | 11.1 | — |
| Number of Motors | — | 2 |
| Motor Horsepower | — | 308 hp |
| Motor Torque | — | 435 Nm |
| Battery Capacity | — | 71.4 kWh |
| EV Range | — | 440 km |
| Charging Rate (AC) | — | 11 kW |
| Charging Rate (DC) | — | 150 kW |
| Drivetrain | ||
| Transmission | Conventional Automatic | Single Ratio Automatic |
| Transmission Name | 8-Speed Steptronic Sport Transmission | — |
| Gears | 8 | — |
| Transmission Manufacturer | ZF | — |
| Driveline | Rear Wheel Drive | All Wheel Drive |
| Performance & Efficiency | ||
| 0-100 km/h | 5.4 seconds | 5.3 seconds✓ |
| Rated Economy | 6.5 L/100 km | — |
| Top Speed | 250 km/h✓ | 160 km/h |
| Co2 | 149 g/km | — |
| Dimensions | ||
| Length | 4,324 mm | 4,805 mm |
| Width | 1,864 mm | 1,895 mm |
| Height | 1,304 mm | 1,635 mm |
| Wheelbase | 2,470 mm | 2,850 mm |
| Weight | 1,491 kg | 2,125 kg |
| Fuel Tank | 52 litres | — |
| Doors | 2 | 5 |
| Seats | 2 | 5 |
| Boot Space | 280 litres | 522 litres✓ |
| Front Tyre | 225/45R18 | 235/50R20 |
| Rear Tyre | 255/40R18 | 235/50R20 |
| Factory Tyres | Michelin Pilot Super Sport | — |
| Chassis | ||
| Assembly | Austria (CBU) | Japan (CBU) |
| Front Suspension | MacPherson Strut | MacPherson Strut |
| Rear Suspension | Multi-link | Double Wishbones |
| Front Wheels | 18" Double Spoke Style 798M Alloys | 20" Aluminium in Black and Bright Machined Finish |
| Rear Wheels | 18" Double Spoke Style 798M Alloys | 20" Aluminium in Black and Bright Machined Finish |
| Steering | Rack and Pinion (Electric Power Steering) | Rack And Pinion (Electric Power Steering) |
| Chassis Notes | M Sport Suspension | — |
| Safety | ||
| Airbags | 4 (Driver and Passenger, Front Side) | 7 (Driver and Passenger, Front Side, Front and Rear Curtain, Driver's Knee) |
| ABS/EBD | ✓ | ✓ |
| Stability Control | ✓ | ✓ |
| Alarm | ✓ | ✓ |
| Immobilizer | ✓ | ✓ |
| Airbag Disable Function | ✓ | ✓ |
| Child Safety Lock | — | Manual for Rear Doors |
| Seat Belts | 2 Three-point | 5 Three-point |
| Blind Spot Info System | — | ✓ |
| ISOFIX | — | Available on Two Outer Rear Passenger Seats |
| Autonomous Braking System | — | Yes |
| Lane-keeping Assist | No | Steering Correction |
| Collision Warning | — | ✓ |
| Seatbelt Reminder | For All Seats | For All Seats |
| Safety Notes | Flat Tyre Indicator | — |
| Lighting | ||
| Headlamps | LED Projectors | Bi-LED Projector with Adaptive High Beam and Sequential Indicators |
| Taillamps | LED Combination | Full LED with Sequential Indicators |
| LED Daytime Running Lights | ✓ | ✓ |
| Rear Foglamps | ✓ | ✓ |
| Wing Mirror Turn Indicators | ✓ | ✓ |
| Cabin | ||
| Front Seats | Power Adjustable Front Seats with Memory Function | 10-way Power Adjustable Front Seats with Driver's Memory Function |
| Rear Seats | — | 60:40 Split-folding |
| Front Air-con | Dual-zone Automatic Climate Control System | Dual-zone Automatic Climate Control with Lexus Climate Concierge |
| Rear Air-con | — | Single-zone Automatic Climate Control System |
| Power Sockets | 1 Front | 1 Front, 3 USB-C Front, 2 USB-C Rear |
| Interior Lighting | Map Lights and Ambient Lights | Map Lights and Ambient Lights (64 Colours) |
| Cup Holders | 2 Front | 2 Front, 2 Rear |
| Audio | 10.25" BMW Navigation system Professional, iDrive Touch controller, 12-speaker Harman Kardon Surround Sound System | 14" EMV Touchscreen with Bluetooth, Navigation, Voice Recognition, Wired Android Auto, Wireless Apple CarPlay and 12-speaker Lexus Premium Sound System |
| Convenience | ||
| Power Windows | Two Windows, Auto Up and Down with Anti-Pinch | Four Windows, Auto Up and Down with Anti-Pinch |
| Engine Start | Keyless Push Button | Keyless Push Start |
| Locks | Keyless Operation | Keyless Operation (with Smart Card Key) |
| Auto Start/Stop | ✓ | — |
| Auto Headlamps | ✓ | ✓ |
| Auto Wipers | ✓ | ✓ |
| Cruise Control | Passive Cruise Control | Adaptive Cruise Control with Steering Assist and Stop and Go |
| Tiptronic | ✓ | — |
| Paddle Shift | ✓ | — |
| Steering Audio Control | ✓ | ✓ |
| Steering Tilt | ✓ | ✓ |
| Steering Telescopic | ✓ | ✓ |
| Electric Steering Adjustment | — | ✓ |
| Boot Operation | Remote Control Activation | Powered Boot with Contactless Opening |
| Parking Sensor Front | 4 Sensors | 6 Sensors |
| Parking Sensor Rear | 4 Sensors | 6 Sensors |
| Reverse Camera | Yes | Yes, with Surround View Camera |
| Auto Parking | Yes | Yes |
| Folding Wing Mirrors | ✓ | ✓ |
| Bluetooth | ✓ | ✓ |
| Navigation | ✓ | ✓ |
| Head-up Display | — | ✓ |
| Hill Start Assist | ✓ | ✓ |
| Instrument Cluster | Full LCD Monitor | Full LCD Monitor |
| Parking Brake | Electronic | Electronic |
| Convenience Notes | BMW ConnectedDrive, Concierge Service | — |
| Warranty | ||
| Warranty Mileage Manufacturer | Unlimited | Unlimited |
| Warranty Manufacturer | 2 years | 5 years✓ |
| Warranty Notes | — | 8-year, unlimited mileage warranty on EV battery |
Specs shown for the selected variant of each car. ✓ marks the better figure where lower/higher is objectively better. Road tax: West Malaysia, private registration. Running-cost estimates assume 20,000 km/year. Fuel at RM1.99/litre (RON95, subsidised). Electricity at RM0.44/kWh (TNB domestic, home charging); public DC charging costs around RM1.30/kWh. Charging times estimated from battery capacity and peak charging rates. Insurance: comprehensive motor tariff, no NCD. Instalment: 10% down, 2.5% flat rate, 9 years. Prices checked November 2026.
Used Z4 & RZ for sale
Our reviews & guides
Z4 vs RZ FAQ
How long does charging take?
The RZ's 71.4 kWh battery takes about 6.5 hours for a full AC charge, and an estimated 35 minutes from 10% to 80% on a DC fast charger at its 150 kW peak.
Which has the better warranty?
The RZ carries a 5-year manufacturer warranty against 2 years for the Z4. RZ: 8-year, unlimited mileage warranty on EV battery.