Vehicle Overview
| Segment | Compact luxury coupé / convertible |
| Body Style | 2-door coupé and convertible |
| Model Year | 2020 (current generation, G22 Coupé / G23 Convertible / G26 Gran Coupé) |
| Trim Levels (U.S./UK) | 420i, 430i, M440i xDrive, M4 (separate performance model) |
The BMW 4 Series is a sleek, driver-focused luxury coupé that blends performance and prestige. Sitting between the 3 Series sedan and 8 Series grand tourer, it delivers sharper handling, bold styling, and a more emotional driving experience.
Redesigned for 2020, the latest generation features a distinctive large kidney grille, stiffer chassis, advanced driver assistance tech, and a range of turbocharged petrol and diesel engines (plus mild-hybrid options). It competes directly with the Audi A5, Mercedes-Benz C-Class Coupé, and Lexus RC.
Key Specifications
| Variant | Engine | Power / Torque | 0–62 mph | Drivetrain | Economy (WLTP) |
|---|---|---|---|---|---|
| 420i | 2.0L Turbo I4 | 184 hp / 300 Nm | 7.5 s | RWD / AWD | 44–48 mpg |
| 430i | 2.0L Turbo I4 | 258 hp / 400 Nm | 5.8 s | RWD / AWD | 41–45 mpg |
| M440i xDrive | 3.0L Turbo I6 (MHEV) | 374 hp / 500 Nm | 4.5 s | AWD | 38–41 mpg |
| Transmission | 8-speed Steptronic automatic (manual discontinued in most markets) |
| Dimensions (L×W×H) | 187.9 × 72.9 × 54.6 in |
| Wheelbase | 112.2 in |
| Curb Weight | 1,570–1,800 kg |
| Boot Space | 440 L (Coupé) / 385 L (Convertible) |
Exterior Design
The 4 Series makes a bold statement with its upright vertical kidney grille, slim LED headlights, and sculpted bonnet. It’s sportier and more aggressive than the 3 Series sedan it’s based on.
Long doors, frameless windows, and a wide stance emphasize its coupé proportions. The M Sport trim adds aerodynamic styling, gloss-black accents, and 18–19” wheels.
The Convertible (G23) features a sleek soft-top roof that opens in just 18 seconds, saving weight compared to the previous hardtop.
Interior, Comfort & Materials
Inside, the 4 Series mirrors BMW’s latest design philosophy — minimalist yet premium. The driver-focused cockpit, excellent materials, and solid ergonomics create a high-end feel.
Front seats are low-slung and supportive, ideal for spirited driving, while rear seats are usable for short trips. Materials range from Vernasca leather to Sensatec upholstery, with aluminum or wood trim options.
Noise insulation is impressive, particularly on the coupé, while the convertible adds wind deflectors and acoustic lining for comfort on open-top drives.
Features & Infotainment
10.25-inch iDrive 7/8 infotainment system (depending on model year)
12.3-inch digital instrument cluster
Wireless Apple CarPlay & Android Auto
BMW Intelligent Personal Assistant (voice control)
Harman Kardon surround sound (optional)
Head-Up Display
Wireless phone charging & multiple USB-C ports
3-zone automatic climate control
Heated & ventilated seats (optional)
BMW’s iDrive remains one of the most responsive and intuitive systems in the segment, blending physical controls with a crisp touchscreen.
Safety & Ratings
| Euro NCAP | ★★★★★ (5 Stars, 2020 3 Series platform rating) |
Safety & Assistance Systems
Active Cruise Control with Stop & Go
Lane Keep Assist & Lane Departure Warning
Forward Collision Warning with Auto Braking
Blind-Spot Monitoring & Rear Cross-Traffic Alert
Parking Assistant Plus with 360° Camera
Traffic Sign Recognition
Automatic Emergency Braking
Driving Performance & Handling
The BMW 4 Series stays true to its sporty heritage. The chassis tuning is firmer than the 3 Series, offering sharper cornering and excellent body control.
The 430i feels brisk, while the M440i xDrive transforms it into a junior grand tourer — powered by a silky-smooth inline-six with 48V mild-hybrid tech.
Steering feedback is precise, and the adaptive M suspension provides a perfect balance of ride comfort and responsiveness. The xDrive system ensures stability in all conditions, while RWD models deliver classic BMW balance.
Fuel Efficiency
420i: 44–48 mpg (UK) / 35–38 mpg (U.S. equivalent)
430i: 41–45 mpg
| M440i | 38–41 mpg (mild hybrid) |
The mild-hybrid system on six-cylinder models assists coasting and regeneration, improving real-world economy.
Practicality & Everyday Usability
Coupé: 440L boot (similar to a compact sedan)
| Convertible | 385L boot (roof up) / 300L (roof down) |
40/20/40 split-folding rear seats
Easy access with wide doors and frameless glass
Decent visibility for a coupé; parking sensors standard
The 4 Series combines sporting appeal with genuine usability — ideal for commuters who crave a performance edge.
Warranty & Maintenance
| Warranty | 3 years / unlimited mileage (UK) or 4 years / 50,000 miles (U.S.) |
| Service Packages | BMW Service Inclusive available (up to 5 years) |
| Roadside Assistance | Standard with warranty period |
Price & Value for Money
Starting Price (2024)
420i Sport — £43,500 / $48,300
430i M Sport — £47,500 / $52,200
M440i xDrive — £58,000 / $64,200
| Convertible variants | +£5,000 / +$6,000 |
The 4 Series offers excellent performance and interior quality for the money — undercutting many rivals while delivering genuine driving excitement.
Comparison with Rivals
| Model | Power (hp) | Drivetrain | 0–62 mph | Starting Price |
|---|---|---|---|---|
| BMW 430i | 258 | RWD | 5.8 s | £47,500 |
| Audi A5 45 TFSI | 265 | AWD | 5.5 s | £47,000 |
| Mercedes C300 Coupé | 255 | RWD | 6.0 s | £48,000 |
| Lexus RC 350 | 311 | RWD | 6.3 s | £49,500 |
The 4 Series leads on driving dynamics and chassis feel, though the Audi A5 offers slightly more refinement and all-weather grip.
Pros & Cons
Pros
Engaging, balanced handling
Premium interior and intuitive tech
Wide choice of powertrains
Comfortable long-distance GT ability
Convertible offers refined open-air luxury
Cons
Bold grille design polarizing for some
Rear seats tight for tall passengers
Options can make pricing steep
Overall Rating
4.7 / 5 Stars – A refined, dynamic, and luxurious coupé that perfectly balances performance and sophistication.
Final Verdict
The BMW 4 Series blends BMW’s iconic driving dynamics with everyday comfort and premium craftsmanship. It’s more expressive and focused than the 3 Series sedan, yet practical enough for daily use.
Whether you choose the smooth 430i or the thrilling M440i, the 4 Series offers genuine excitement behind the wheel, backed by timeless coupe style and cutting-edge technology.
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Specifications, prices and equipment were current at publication and vary by model year, trim and market. Verify final details with a franchised dealer before ordering. Read how we review cars and our editorial policy.