BMW Cars with the B58 Engine: Performance, Models, and Tuning Potential
- autowriter
- 3 days ago
- 2 min read
The BMW B58 engine is a 3.0L turbocharged inline-6 that has become one of the most celebrated powerplants in modern automotive history. Known for its smooth power delivery, tuning potential, and reliability, the B58 powers some of BMW’s most popular models, as well as the Toyota GR Supra.
In this guide, we’ll explore:
✔ Which BMW models use the B58 engine?
✔ Performance specs (stock vs. tuned)
✔ Common upgrades for more power
✔ Why the B58 is considered one of BMW’s best engines
1. BMW Models with the B58 Engine
The B58 has been used in multiple BMW models since its debut in 2015, with updates in 2019 (B58TU) and 2023 (B58B30M2). Below are the key models equipped with this engine:
A. Sedans & Coupes
- BMW 340i / M340i (F30, G20, G80) – 320–382 HP
- BMW M240i (F22, G42) – 340–382 HP
- Toyota GR Supra (A90, A91) – 382–473 HP (B58B30C variant)
B. SUVs & Crossovers
- BMW X7 40i (G07) – 335–375 HP
- BMW Z4 M40i (G29) – 382 HP
2. B58 Engine Specs & Performance
| Spec | B58B30O1 (Pre-2019) | B58TU (2019+) | B58 in Supra |
|----------------|----------------------|------------------|----------------|
| Turbo | Twin-scroll BorgWarner | Updated turbo | Modified for Supra |
Real-World Performance
- 0-60 MPH Times:
- M340i (G20): 4.1 sec (stock) → 3.5 sec (tuned)
- Toyota Supra: 3.9 sec (stock) → 3.2 sec (Stage 2)
- Top Speed: Electronically limited to 155 MPH (higher with tune).
3. Why the B58 is Enthusiast’s Need
The B58 responds exceptionally well to modifications:
Stage 1 (450–500 HP)
- ECU Tune (BM3, MHD, JB4) – Unlocks +80–100 HP
- High-Flow Air Filter (Injen, MST) – Improves airflow
Stage 2 (500–600 HP)
- Catless Downpipe (VRSF, Fabspeed) – Reduces backpressure
- Upgraded Intercooler (Wagner, CSF) – Cools intake temps
- Ethanol Blend (E30/E85) – Increases octane for more power
Stage 3 (600–800+ HP)
- HPFP Upgrade (Dorch, Spool) – Supports high ethanol blends
- Built Engine (Forged Pistons/Rods) – For extreme builds
4. B58 Reliability: How Does It Hold Up?
✅ Stronger than N55/N54 – Closed-deck block, forged internals.
✅ Fewer carbon buildup issues – Dual injection helps.
⚠ Watch for: Coolant leaks (water pump, thermostat).
Mileage Expectancy:
- Stock: 150,000+ miles with proper maintenance.
- Tuned (500+ HP): 100,000+ miles if well-maintained.
5. Is the B58 BMW’s Best Engine?
With its power, tunability, and reliability, the B58 is arguably BMW’s greatest modern engine. Whether in a 340i, M240i, or Supra, it delivers thrilling performance with everyday usability.
🔧 Want more? Check:
- https://alabamaracingscene.net/exploring-the-b58-engine-performance-availability-and-applications/
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**#B58 #BMW #TurboSix #ToyotaSupra #Tuning
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