BMW 340i
The BMW 340i is the performance-focused flagship of the F30 3 Series range — powered by the B58 3.0-litre turbocharged inline-six producing 326 hp, bridging the gap between the standard 3 Series and the full M3 with a refined but genuinely fast character.
Overview
The BMW 340i replaced the 335i in the F30 3 Series lineup from 2015, bringing BMW's new B58 3.0-litre turbocharged inline-six in place of the outgoing N55. The B58 represented a significant improvement: greater refinement, better thermal efficiency, and 326 hp with 450 Nm of torque delivered in a smooth, linear fashion. The 340i became the definitive sporting 3 Series for buyers who found the M3 too extreme for daily use.
The F30 340i was available as a sedan (F30), wagon (F31 340i Touring), and gran turismo (F34), and could be specified with rear-wheel drive or the xDrive all-wheel-drive system. The 8-speed automatic was the primary transmission, though some markets offered a 6-speed manual. M Sport package added visual and dynamic enhancements that made the 340i appear and behave noticeably sportier than standard 3 Series variants.
For Azerbaijan buyers, the 340i occupies a sweet spot in the 3 Series hierarchy. The B58 is a highly regarded engine — smooth, powerful, and with a strong tuning aftermarket if desired. Used 340i pricing reflects the premium over lesser 3 Series but remains accessible compared to the M3. It is one of the most well-rounded BMWs for mixed city and motorway use.
340i in Pictures
Exterior design, cabin layout, and real-world use reference images. Broken links gracefully fall back to text tiles.
Key Specifications
- Engine: B58B30 3.0L turbocharged inline-six, 326 hp / 450 Nm
- 0–100 km/h: 4.6 seconds (RWD), 4.4 seconds (xDrive)
- Transmission: 8-speed automatic (primary), 6-speed manual (select markets)
- Drivetrain: RWD or xDrive all-wheel drive
- Top speed: 250 km/h (electronically limited)
- Adaptive suspension (M Sport / optional)
- Variable sport steering (optional)
- Available as sedan, Touring wagon, and Gran Turismo
Variant Comparison
| Variant | Engine | Power | 0–100 km/h | Best For |
|---|---|---|---|---|
| 340i RWD | B58 3.0L Turbo I6 | 326 hp | 4.6 sec | Sporty driving purist |
| 340i xDrive | B58 3.0L Turbo I6 | 326 hp | 4.4 sec | All-weather performance |
| 340i Touring | B58 3.0L Turbo I6 | 326 hp | 4.8 sec | Performance estate |
Competitor Snapshot
Competitor choice in Azerbaijan should account not only for headline specs, but for service ecosystem, parts availability, and ownership confidence over your actual routes.
| Model | Core Strength | Main Compromise (Local Context) |
|---|---|---|
| Mercedes-Benz C43 AMG (W205) | V6 AMG performance, distinctive styling, premium cabin | Slightly thirstier, AMG suspension setup can be harsh daily |
| Audi S4 (B9) | Quattro AWD, V6 TFSI, strong real-world performance | Less engaging steering feel than 340i, heavier chassis |
| Alfa Romeo Giulia 2.9 (QV not req.) | RWD purity, sharp handling, distinctive design | Reliability concerns and limited parts in Azerbaijan |
| Volvo S60 T6 Polestar | Understated performance, practical Scandinavian quality | Less dynamic than 340i, limited service network in Baku |
Repair & Service in Azerbaijan
BMW has an established service presence in Baku through authorised dealerships and independent specialists familiar with the brand. Parts supply for common maintenance items is generally reliable, though specialist components for performance models and older generations may require additional lead time.
- B58 engine is notably more reliable than the preceding N55 — fewer cooling system and electronics issues
- Timing chain guide: inspect at high mileage; B58 guide wear is less common than N55 but warrants checking
- Cooling system: thermostat and water pump are standard service items at 80,000+ km
- Valve cover gasket: common oil leak on higher-mileage B58 units — budget for replacement
- 8-speed ZF gearbox: robust unit; transmission fluid service at 60,000 km maintains shift quality
- Brake system: inspect pads, discs, and callipers at every service — 340i drivers tend to use brakes hard
Ownership Cost Estimator (Azerbaijan)
Adjust these values for your driving profile. All figures are estimates for planning purposes only.
- Estimated annual fuel consumption: 1800 L
- Estimated annual fuel cost: $1260
- Total annual ownership estimate: $5760
- Average monthly ownership estimate: $480
- B58 is an efficient engine in everyday use — 8–10 L/100km in mixed city/motorway driving is achievable
- BMW Condition Based Servicing (CBS) monitors oil life and service intervals automatically
- xDrive transfer case and front differential require fluid service at 60,000 km intervals
- B58 is a highly tuneable engine — be aware of any previous ECU modifications when buying used
- Premium fuel (RON 95 minimum, RON 98 recommended) maintains full performance and protects the B58
Used 340i Buying Checklist
Inspect each point thoroughly before committing to a purchase. Request service records, VIN validation, and any recall completion documentation.
- B58 health check: oil condition, any evidence of coolant leaks, valve cover gasket sealing
- Service history: verify BMW CBS records or workshop stamps showing regular oil and filter changes
- Software and ECU: check for any stage tune or aftermarket ECU modifications — affects reliability assessment
- xDrive operation (if fitted): confirm smooth AWD engagement with no vibration or chatter in low-speed turns
- Suspension inspection: test for knock or play at front struts and rear multi-link bushings
- Transmission: test all drive modes — Sport, Comfort, and manual override paddle shifts
- Tyre condition: check for wear patterns indicating misalignment or aggressive use
- Electronics: verify iDrive, parking sensors, and all BMW ConnectedDrive functions operate correctly
340i FAQ — Azerbaijan Buyers
Is the 340i significantly better than the 335i?
The B58 in the 340i is a clear step forward over the N55 in the 335i — more refined, smoother, and technically superior. Peak outputs are similar (326 vs 300 hp in most 335i variants) but the B58 delivers its power more smoothly and is generally more reliable. For a daily driver, the 340i is the recommended choice if budget allows.
RWD or xDrive for the 340i?
RWD is the purist choice — lighter, more engaging, and the preferred configuration for drivers who want the classic BMW rear-wheel-drive experience. xDrive makes the 340i a more capable all-weather machine and is the better choice for buyers who regularly drive in rain or varied conditions. Both are excellent; the choice is about priorities.
Is the 340i a good alternative to the M3?
The 340i is a better daily driver than the M3 — more comfortable suspension, lower running costs, and quieter at cruise. The M3 is markedly faster (up to 60+ hp more) and has a far more focused chassis. The 340i is the choice for buyers who want strong performance with everyday civility; the M3 is for those who prioritise driving dynamics above all.
Should You Buy the BMW 340i?
The BMW 340i with the B58 engine is one of the finest executive saloons of its generation. It delivers real performance without the M3's compromises, has a highly reliable powertrain, and remains practical enough for daily use. In Azerbaijan's market, a clean 340i M Sport with documented history represents strong value — choose xDrive for year-round confidence or RWD for the most engaging BMW 3 Series experience below M3 level.
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