The 2018 BMW 340i, part of the F30 generation's final model years, is a sporty executive sedan celebrated for its potent powertrain and engaging driving dynamics. Available as a sedan and Gran Turismo, it typically featured rear-wheel drive or xDrive all-wheel drive. Key trims revolved around the 340i designation, often with optional M Sport packages. Its popularity stems from offering a compelling blend of performance and luxury without reaching the price point of higher-tier BMW models, making it a standout choice for enthusiasts seeking a powerful yet practical daily driver.
The Good
The 2018 BMW 340i excels with its exhilarating performance and refined handling, appealing to driving enthusiasts. It offers a comfortable and well-appointed interior for daily commutes and long journeys, while its timeless design remains attractive. Practical buyers appreciate its relatively good fuel efficiency for its class and its strong value proposition as a premium sedan.
The Bad
Owners should be aware of potential issues with the electric power steering system, particularly concerning leaks or stiffness. Some models may experience minor electronic glitches, and the infotainment system can occasionally be less intuitive than competitors'. Regular maintenance is crucial, as neglecting it can lead to more significant and costly repairs down the line.
2018 BMW 340: Quick Overview
- Engine Options: The primary engine for the 2018 BMW 340i is the B58 3.0-liter turbocharged inline-six.
- Horsepower: This potent engine produces 322 horsepower.
- Torque: It generates 332 lb-ft of torque.
- Fuel Economy: EPA estimated fuel economy for the 2018 BMW 340i is approximately 20 MPG city and 29 MPG highway for RWD models, and 19 MPG city and 28 MPG highway for xDrive models.
- 0-60 Times: Acceleration is brisk, with 0-60 MPH times typically ranging from 4.3 to 4.7 seconds, depending on drivetrain (RWD vs. xDrive) and transmission.
- Towing Capacity: The 2018 BMW 340i is not designed for towing, and thus, towing capacity is not applicable.
- Transmission: Available with either an 8-speed Steptronic automatic transmission or a 6-speed manual transmission (less common).
- Drivetrain: Rear-wheel drive (RWD) is standard, with BMW's xDrive all-wheel drive system available as an option.
- Body Styles: Available as a four-door sedan and a Gran Turismo (GT) hatchback.
- Key Trims and Features: The 340i itself represents the top performance trim of the 3 Series sedan for that year. Standard features typically include:
- LED headlights
- Sport seats
- Automatic climate control
- iDrive infotainment system with a 6.5-inch display
- Bluetooth connectivity
- USB port
- M Sport suspension
- M Aerodynamic kit
- M steering wheel
- 18-inch or 19-inch M Sport wheels
- Sportier interior accents
2018 BMW 340 Specifications
Vehicle Information
| Year | 2018 |
| Make | BMW |
| Model | 3-Series |
| Trim | - |
| Style | - |
| Type | Sedan |
| Category | Compact Car |
Manufacturing Details
| Made In | Germany |
| Manufacturing City | LEIPZIG |
Dimensions
| Doors | 4-Door |
| Curb Weight | - |
| Gross Vehicle Weight Rating | - |
| Overall Height | 56.30 inches |
| Overall Length | 182.80 inches |
| Overall Width | 71.30 inches |
| Wheelbase Length | 110.60 inches |
| Standard Seating | 5 |
Engine & Performance
| Engine | 3L I6 |
| Engine Size | 3L |
| Engine Cylinders | 6 |
| Transmission | 8-Speed Automatic |
| Transmission Type | Automatic |
| Transmission Speeds | 8-Speed |
| Drivetrain | Rear-Wheel Drive |
Additional Features
| Anti-Brake System | 4-Wheel ABS |
| Steering Type | Rack & Pinion |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | $48,950 |
| Invoice Price | $46,025 |
| Delivery Charges | $995 |
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What Problems Does the 2018 BMW 340 Have?
The 2018 BMW 340i, while generally considered a reliable vehicle, does have some commonly reported issues that prospective buyers should be aware of. One recurring concern is related to the electric power steering system. Owners have reported instances of leaks from the power steering reservoir or pump, leading to a loss of assist and potentially costly repairs. In some cases, the steering can feel stiff or exhibit increased resistance. Another area to watch is the cooling system. While not as prevalent as steering issues, some owners have noted premature failure of the water pump or thermostat housing, leading to coolant leaks and overheating.
Electrical gremlins can also surface, although these are often minor and may manifest as non-critical warning lights or intermittent glitches with the infotainment system or other electronic modules. The iDrive system, while functional, can sometimes be less intuitive than newer interfaces.
Regarding recalls, it's essential to check the VIN for any outstanding safety recalls. For the 2018 model year, BMW has issued recalls that could affect vehicles like the 340i, often related to issues such as potential problems with the crankcase ventilation valve, which could lead to oil leaks, or issues with the fuel pump. These recalls are usually addressed by dealerships free of charge.
Long-term reliability for the 340i is generally good, especially if it has been meticulously maintained. The B58 engine is known for its robust construction and good durability. However, as with any premium vehicle, maintenance costs can be higher than average. Neglecting regular oil changes, fluid flushes, and timely replacement of wear-and-tear items can exacerbate potential issues and lead to more significant problems over time. For example, a poorly maintained cooling system can lead to head gasket issues or premature turbocharger failure. Similarly, neglecting steering fluid can lead to pump damage. The 340i is a performance-oriented vehicle, and as such, components subject to higher stress, like brakes and suspension, may require more frequent attention depending on driving style.
Electrical gremlins can also surface, although these are often minor and may manifest as non-critical warning lights or intermittent glitches with the infotainment system or other electronic modules. The iDrive system, while functional, can sometimes be less intuitive than newer interfaces.
Regarding recalls, it's essential to check the VIN for any outstanding safety recalls. For the 2018 model year, BMW has issued recalls that could affect vehicles like the 340i, often related to issues such as potential problems with the crankcase ventilation valve, which could lead to oil leaks, or issues with the fuel pump. These recalls are usually addressed by dealerships free of charge.
Long-term reliability for the 340i is generally good, especially if it has been meticulously maintained. The B58 engine is known for its robust construction and good durability. However, as with any premium vehicle, maintenance costs can be higher than average. Neglecting regular oil changes, fluid flushes, and timely replacement of wear-and-tear items can exacerbate potential issues and lead to more significant problems over time. For example, a poorly maintained cooling system can lead to head gasket issues or premature turbocharger failure. Similarly, neglecting steering fluid can lead to pump damage. The 340i is a performance-oriented vehicle, and as such, components subject to higher stress, like brakes and suspension, may require more frequent attention depending on driving style.
How long will the 2018 BMW 340 last?
Based on owner data and typical maintenance patterns, a 2018 BMW 340i can realistically achieve well over 150,000 miles and can serve its owners for 10 to 15 years. The robust B58 turbocharged inline-six engine is a key contributor to its long-term durability, provided it receives consistent and high-quality maintenance. Weaknesses that can emerge over time, as mentioned, often relate to the electric power steering system and potentially the cooling system components, such as the water pump and thermostat. Regular fluid changes, adherence to BMW's recommended service intervals, and addressing minor issues promptly are critical to maximizing the vehicle's lifespan and preventing more significant, costly repairs as it ages. Owners who drive primarily highway miles and maintain their vehicles diligently can expect excellent longevity.
What Technology & Safety Features are Included?
The 2018 BMW 340i offers a solid suite of technology, entertainment, and safety features, with a good selection of optional upgrades to enhance the driving experience. Standard tech includes BMW's iDrive infotainment system, typically featuring a 6.5-inch display, AM/FM/CD radio, USB and auxiliary audio inputs, and Bluetooth connectivity for hands-free calling and audio streaming. While functional, the standard screen size and interface are less advanced than what newer vehicles offer.
Optional technology features significantly elevate the experience. These include a larger 8.8-inch display for the iDrive system, which is more user-friendly and visually appealing. Navigation is also a common option, often bundled with features like real-time traffic information. Apple CarPlay was available as an option, though Android Auto was notably absent for this model year. A premium Harman Kardon surround sound system is another popular upgrade for audiophiles.
In terms of driver-assistance and safety, the 2018 340i comes equipped with standard features like anti-lock brakes, traction and stability control, and a rearview camera. However, BMW offered a range of advanced driver-assistance systems (ADAS) as optional extras. These could include:
Optional technology features significantly elevate the experience. These include a larger 8.8-inch display for the iDrive system, which is more user-friendly and visually appealing. Navigation is also a common option, often bundled with features like real-time traffic information. Apple CarPlay was available as an option, though Android Auto was notably absent for this model year. A premium Harman Kardon surround sound system is another popular upgrade for audiophiles.
In terms of driver-assistance and safety, the 2018 340i comes equipped with standard features like anti-lock brakes, traction and stability control, and a rearview camera. However, BMW offered a range of advanced driver-assistance systems (ADAS) as optional extras. These could include:
- Adaptive Cruise Control (ACC): Maintains a set speed and distance from the vehicle ahead.
- Lane Departure Warning (LDW): Alerts the driver if the vehicle drifts out of its lane.
- Blind Spot Monitoring (BSM): Warns the driver of vehicles in their blind spots.
- Parking Assistant: Aids in parallel parking maneuvers.
- Front and Rear Park Distance Control (PDC): Provides audible and visual cues when parking.
- Surround View Camera System: Offers a 360-degree view around the vehicle.
What Colors Options are Available?
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2018 BMW 340 Prices and Market Value
When new, the 2018 BMW 340i had an original MSRP that typically started in the mid-$50,000s, with prices easily climbing into the $60,000s when optioned with packages like the M Sport and various technology and luxury features. Currently, used 2018 BMW 340i models can range from approximately $22,000 to $35,000, depending heavily on mileage, condition, trim level, and optional equipment.
The 340i has experienced significant depreciation from its original MSRP, which is typical for luxury performance sedans. However, its resale value is strong compared to many non-premium competitors due to its performance legacy, brand prestige, and enthusiast following. Factors that positively affect resale value include low mileage, excellent maintenance records, desirable optional packages (like M Sport), and a clean vehicle history. Conversely, high mileage, significant wear and tear, or a lack of service history will negatively impact its value. The 340i often holds its value better than lower-tier 3 Series models due to its superior powertrain.
The 340i has experienced significant depreciation from its original MSRP, which is typical for luxury performance sedans. However, its resale value is strong compared to many non-premium competitors due to its performance legacy, brand prestige, and enthusiast following. Factors that positively affect resale value include low mileage, excellent maintenance records, desirable optional packages (like M Sport), and a clean vehicle history. Conversely, high mileage, significant wear and tear, or a lack of service history will negatively impact its value. The 340i often holds its value better than lower-tier 3 Series models due to its superior powertrain.
2018 BMW 340 Cost of Ownership
The 2018 BMW 340i is generally considered costly to own compared to mainstream sedans. Insurance premiums can be higher due to its performance nature and luxury status. Fuel costs are moderate for its class, with the turbocharged six-cylinder engine offering reasonable efficiency but still requiring premium fuel. Maintenance, including routine servicing and the eventual replacement of wear items like tires and brakes, will be more expensive than average, as BMW parts and labor carry a premium. Repair costs can also be significant, especially for specialized components or if issues with the power steering or electronics arise. Overall, it is not an economical vehicle to own but offers a rewarding experience for those who prioritize performance and luxury.
2018 BMW 340 Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
15.80 gallons
City Mileage
21 miles/gallon
Highway Mileage
32 miles/gallon
2018 BMW 340 Warranty
Basic
Original warranty
48 months / 50,000 miles
Estimated remaining
Expired
Powertrain
Original warranty
48 months / 50,000 miles
Estimated remaining
Expired
Rust
Original warranty
144 months / unlimited miles
Estimated remaining
48 months / unlimited miles
2018 BMW 340 Insurance
Insurance for a 2018 BMW 340 is moderately priced, reflecting its status as a Sedan with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 2018 BMW 340 Compare to Other Sedan?
The 2018 BMW 340i competed in the premium sports sedan segment against formidable rivals such as the Audi S4, Mercedes-AMG C43, and the Infiniti Q50 Red Sport 400.
Performance: In terms of raw performance, the 340i was a top contender. Its 3.0-liter turbo-six offered strong acceleration and a balanced power delivery. The Audi S4, with its potent V6, was equally impressive and often praised for its quattro all-wheel-drive grip. The Mercedes-AMG C43 provided exhilarating power and a more aggressive, sport-tuned feel. The Infiniti Q50 Red Sport 400 boasted even more horsepower, but its handling was sometimes considered less refined than the German rivals.
Features: All these vehicles offered a high level of interior luxury and technology. BMW's iDrive system, while functional, was often seen as slightly less intuitive than Audi's MMI or Mercedes-Benz's COMAND system by some reviewers. Audi and Mercedes generally offered more cutting-edge driver-assistance tech as standard or readily available options. Infiniti's infotainment could be a bit dated by comparison.
Reliability: Historically, BMW and Audi have had mixed reliability records, often ranking below Japanese luxury brands. The 340i, with its B58 engine, is considered quite robust for a modern BMW. The Infiniti Q50 has a reputation for better long-term reliability, particularly its V6 powertrains. Mercedes-Benz reliability can also be variable.
Price: When new, the 340i was competitively priced within this segment, often undercutting the Audi S4 and Mercedes-AMG C43 by a slight margin, especially when considering similar option levels. The Infiniti Q50 Red Sport 400 often offered more power for the money. On the used market, the 340i offers good value, often depreciating more than its German rivals, making it an attractive option.
Alternatives:
Performance: In terms of raw performance, the 340i was a top contender. Its 3.0-liter turbo-six offered strong acceleration and a balanced power delivery. The Audi S4, with its potent V6, was equally impressive and often praised for its quattro all-wheel-drive grip. The Mercedes-AMG C43 provided exhilarating power and a more aggressive, sport-tuned feel. The Infiniti Q50 Red Sport 400 boasted even more horsepower, but its handling was sometimes considered less refined than the German rivals.
Features: All these vehicles offered a high level of interior luxury and technology. BMW's iDrive system, while functional, was often seen as slightly less intuitive than Audi's MMI or Mercedes-Benz's COMAND system by some reviewers. Audi and Mercedes generally offered more cutting-edge driver-assistance tech as standard or readily available options. Infiniti's infotainment could be a bit dated by comparison.
Reliability: Historically, BMW and Audi have had mixed reliability records, often ranking below Japanese luxury brands. The 340i, with its B58 engine, is considered quite robust for a modern BMW. The Infiniti Q50 has a reputation for better long-term reliability, particularly its V6 powertrains. Mercedes-Benz reliability can also be variable.
Price: When new, the 340i was competitively priced within this segment, often undercutting the Audi S4 and Mercedes-AMG C43 by a slight margin, especially when considering similar option levels. The Infiniti Q50 Red Sport 400 often offered more power for the money. On the used market, the 340i offers good value, often depreciating more than its German rivals, making it an attractive option.
Alternatives:
- Similar: The Audi S4 is a very close competitor, offering excellent AWD performance and a luxurious interior. The Mercedes-AMG C43 provides a more comfort-oriented luxury experience with strong performance.
- Potentially Better Value/Reliability: If outright performance is slightly less critical and long-term reliability is a higher priority, the Infiniti Q50 Red Sport 400 offers significant power for its price point, though its driving dynamics might not be as sharp. The Lexus GS 350 F Sport, while less powerful, often excels in reliability and build quality.
Final Verdict: Is the 2018 BMW 340 a Good Sedan?
The 2018 BMW 340i is ideal for driving enthusiasts who crave exhilarating performance and engaging handling but still require the practicality and comfort of a luxury sedan. It's for those who appreciate a potent engine, a driver-focused chassis, and the prestige of the BMW brand.
It is definitely worth buying, particularly on the used market. Given its original price point, used 340i models offer tremendous value, delivering a premium driving experience that often surpasses newer, less powerful vehicles at a similar price.
The ideal condition to buy is a used model with a well-documented maintenance history, ideally with the M Sport package for enhanced aesthetics and handling. While a manual transmission is rare and sought after by purists, the 8-speed automatic is a fantastic performer. Buyers should be prepared for potentially higher ownership costs than a non-luxury vehicle, but the performance and driving pleasure gained make it a worthwhile investment for the right individual.
It is definitely worth buying, particularly on the used market. Given its original price point, used 340i models offer tremendous value, delivering a premium driving experience that often surpasses newer, less powerful vehicles at a similar price.
The ideal condition to buy is a used model with a well-documented maintenance history, ideally with the M Sport package for enhanced aesthetics and handling. While a manual transmission is rare and sought after by purists, the 8-speed automatic is a fantastic performer. Buyers should be prepared for potentially higher ownership costs than a non-luxury vehicle, but the performance and driving pleasure gained make it a worthwhile investment for the right individual.
Cathleen V
Cathleen is an exceptional freelance writer covering hot topics in the automotive world from a gearhead's perspective. Her articles delve into various aspects of automotive technology and history, offering readers detailed insights into engine performance, reliability, and maintenance. Through her engaging and informative writing, Cathleen provides valuable information to automotive enthusiasts and consumers alike, helping them make informed decisions about vehicle maintenance and purchases.