2023 BMW 4 Series Convertible 430i
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Unverified
All photo credits
- Photo: BMW 420i Cabriolet M Sport (G23) front by Tokumeigakarinoaoshima, CC BY-SA 4.0, via Wikimedia Commons
- Photo: BMW 4 SERIES CONVERTIBLE (G23) China (3) by Dinkun Chen, CC BY-SA 4.0, via Wikimedia Commons
- Photo: 2022 BMW 430i xDrive Convertible in Alpine White, rear left by Mr.choppers, CC BY-SA 3.0, via Wikimedia Commons
- Photo: 2021 BMW 430i Cabrio, rear 6.2.22 by Kevauto, CC BY-SA 4.0, via Wikimedia Commons
- Photo: BMW G23 420i M Sport Vernasca Leather Mocha (2) by Damian B Oh, CC BY-SA 4.0, via Wikimedia Commons
The 2023 BMW 4 Series Convertible 430i is a 255-hp turbocharged inline-4 convertible with an 8-speed sport steptronic and rear-wheel drive. It starts at $55,500 MSRP and is rated at 28 mpg combined.
It makes 255 horsepower at 5,000 rpm and 295 lb-ft of torque at 1550-4400 rpm. EPA fuel-economy estimates are 25 mpg city and 34 mpg highway (28 mpg combined).
The 4 Series Convertible measures 187.9 inches long on a 112.2-inch wheelbase and has a curb weight of 3,918 lb.
| Spec | Value |
|---|---|
| Vehicle | |
| Body Type | Convertible |
| Powertrain | Gas |
| Price | |
| MSRP | $55,500 |
| MSRP with Destination | $56,495 |
| Destination Charge | $995 |
| Engine | |
| Engine Type | 2.0L Inline-4 16V TwinPower Turbo (B46B20O1) |
| Horsepower | 255 hp @ 5,000 rpm |
| Torque | 295 lb-ft @ 1550-4400 rpm |
| Valvetrain | DOHC 16V VALVETRONIC Double-VANOS |
| Bore and Stroke | 82.0 x 94.6 |
| Compression Ratio | 10.2:1 |
| Injection Type | High Precision Injection (Direct) |
| Drivetrain | |
| Drive Type | RWD |
| Differential Type | Open (standard); M Sport limited-slip optional |
| Transmission | |
| Transmission | 8-speed Sport Steptronic |
| 1st Gear | 5.25 |
| 2nd Gear | 3.36 |
| 3rd Gear | 2.17 |
| 4th Gear | 1.72 |
| 5th Gear | 1.32 |
| 6th Gear | 1 |
| 7th Gear | 0.82 |
| 8th Gear | 0.64 |
| Reverse | 3.71 |
| Final Drive | 3.15 |
| Fuel Economy | |
| City | 25 MPG |
| Highway | 34 MPG |
| Combined | 28 MPG |
| Recommended Fuel | Premium |
| Tank Capacity | 15.6 gal |
| Suspension | |
| Turning Diameter | 37.4 ft |
| Brakes | |
| Front Brake Calipers | Single-piston floating |
| Front Brake Disc | 13.7 in (vented) |
| Rear Brake Disc | 13.6 in (vented) |
| Tires & Wheels | |
| Wheels Front | 18 x 7.5 in |
| Wheels Rear | 18 x 7.5 in |
| Tires Front | 225/45R18 |
| Tires Rear | 225/45R18 |
| Dimensions & Weight | |
| Length | 187.9 in |
| Width | 72.9 in |
| Height | 54.6 in |
| Wheelbase | 112.2 in |
| Front Track | 62.3 in |
| Rear Track | 62.7 in |
| Ground Clearance | 5 in |
| Cargo Volume | 9 ft³ |
| Curb Weight | 3,918 lbs |
| Interior | |
| Headroom Front | 40.6 in |
| Headroom Rear | 36.1 in |
| Legroom Front | 41.8 in |
| Legroom Rear | 32.5 in |
| Shoulder Room Front | 55.1 in |
| Shoulder Room Rear | 43.9 in |
Similar cars
Rivals to the 2023 BMW 4 Series Convertible 430i with similar size, power and price from around the same years.
Safety & Recalls
NCAP safety ratings
Tested, but no star ratings were published (2023 BMW 4 Series Convertible C RWD).
Recalls
1 recall on file with NHTSA for the 2023 BMW 4 SERIES. Not every recall applies to every trim or VIN — check yours at nhtsa.gov/recalls.
Dec 6, 2023 · POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
BMW of North America, LLC (BMW) is recalling certain 2023 Toyota GR Supra, 3 Series Sedan (330i xDrive, M340i xDrive, M3), 5 Series Sedan (530i, 530i xDrive, M5), 4 Series Gran Coupe (430i, 430i xDrive), 4 Series Coupe (430i, 430i xDrive, M440i xDrive), 4 Series Convertible (430i, 430i xDrive, M440i xDrive), 8 Series Coupe (840i, M850i xDrive, M8), 8 Series Convertible (840i, M850i xDrive, M8), 8 Series Gran Coupe (850i xDrive, M8), X3 SAV (X3 xDrive30i, X3M), X4 SAV (X4 xDrive30i), X5 SAV (X5 xDrive40i, X5 M50i, X5M), X6 SAV (X6 xDrive40i, X6 M50i, X6M), and Z4 sDrive30i, Z4 M40i vehicles. The weld seam of the integrated transmission control unit's cover may not have been manufactured properly, which could allow automatic transmission oil to leak into the transmission control unit.
Consequence: Transmission oil that leaks into the control unit can lead to a seizure of the transmission gears, causing a sudden loss of drive power and increasing the risk of a crash.
Remedy: Dealers will replace the transmission mechatronics module and the automatic transmission fluid, as necessary, free of charge. Owner notification letters were mailed January 26, 2024. Owners may contact BMW customer service at 1-800-525-7417.
NHTSA campaign 23V821000
6 owner complaints to NHTSA for the 2023 BMW 4 SERIES CONVERTIBLE
Owner Complaints
6 owner complaints filed with NHTSA for the 2023 BMW 4 SERIES CONVERTIBLE. See all on nhtsa.gov
| Seat Belts | 2 |
| Back Over Prevention | 1 |
| Electrical System | 1 |
| Power Train | 1 |
| Unknown Or Other | 1 |
Complaints are unverified reports submitted to NHTSA by owners. They cover the whole model year, not a specific trim, and a count alone doesn't show how common a problem is.
Source: US National Highway Traffic Safety Administration (nhtsa.gov), matched as 2023 BMW 4 SERIES CONVERTIBLE. US-market vehicles only; data cached for up to 7 days.