The 2018 BMW 640 represented the final model year of the highly acclaimed sixth generation (F12/F13/F06) of BMW's executive grand tourer. Available as a coupe, convertible, and Gran Coupe, it offered a blend of luxury, performance, and striking design. Key trims often included the 640i, 640i xDrive, and the M Sport package. Its popularity stemmed from its elegant styling, powerful yet smooth engine, and a sophisticated interior that made it a compelling choice for those seeking a stylish and capable luxury vehicle.
The Good
The 2018 BMW 640 excels with its potent engine, refined handling, and luxurious, comfortable interior, appealing to emotional desires for driving pleasure and practicality. Its timeless design and impressive build quality contribute to a sense of value and lasting appeal.
The Bad
Potential owners should be aware of the 640's advanced technology, which can be complex and potentially costly to repair. Some owners report a firm ride, especially with larger wheels, and the infotainment system can feel dated compared to newer models.
2018 BMW 640: Quick Overview
- Engine Options: The primary engine for the 2018 BMW 640i and 640i xDrive was a 3.0-liter turbocharged inline-six engine.
- Horsepower: This engine produced approximately 315 horsepower.
- Torque: It generated around 330 lb-ft of torque.
- Transmission: Mated to an 8-speed Steptronic automatic transmission.
- Drivetrain: Available in rear-wheel drive (RWD) and all-wheel drive (xDrive).
- Fuel Economy (EPA Estimates):
640i Coupe/Convertible (RWD): Approximately 20 MPG city / 29 MPG highway.
640i Gran Coupe (RWD): Approximately 20 MPG city / 29 MPG highway.
640i xDrive Coupe/Convertible/Gran Coupe: Slightly lower, around 19 MPG city / 27 MPG highway. - 0-60 MPH Times:
640i Coupe (RWD): Around 5.3 seconds.
640i Convertible (RWD): Around 5.5 seconds.
640i Gran Coupe (RWD): Around 5.3 seconds.
xDrive models were generally a tenth or two quicker. - Towing Capacity: The BMW 6 Series is not designed for towing, and towing capacity is not a relevant specification.
- Key Trim-Level Features (640i):
Standard features typically included:- 18-inch alloy wheels
- LED headlights
- Power-adjustable front seats with memory
- Leather upholstery
- Dual-zone automatic climate control
- iDrive infotainment system with a 10.2-inch display
- Navigation system
- Bluetooth connectivity
- Premium sound system
- Sunroof (coupe and Gran Coupe) or power-retractable soft top (convertible)
- Keyless entry and push-button start
- Front and rear parking sensors
Could include:- Larger alloy wheels (19 or 20-inch)
- M Sport aerodynamic kit
- Sport exhaust
- Enhanced suspension tuning
- Sport steering wheel
- Unique interior trim elements
- Head-up display
- Driver assistance packages (adaptive cruise control, lane departure warning, etc.)
- Heated and ventilated seats
- Premium sound systems (e.g., Harman Kardon, Bang & Olufsen)
Coupe: Two-door, fixed roof, sportier profile.
Convertible: Two-door, retractable soft-top, open-air driving experience.
Gran Coupe: Four-door, coupe-like styling, offering more practicality for rear passengers.
2018 BMW 640 Specifications
Vehicle Information
| Year | 2018 |
| Make | BMW |
| Model | 6-Series |
| Trim | - |
| Style | - |
| Type | Convertible |
| Category | Subcompact Car |
Manufacturing Details
| Made In | Germany |
| Manufacturing City | DINGOLFING |
Dimensions
| Doors | 2-Door |
| Curb Weight | 4255 pounds |
| Gross Vehicle Weight Rating | - |
| Overall Height | 53.70 inches |
| Overall Length | 192.80 inches |
| Overall Width | 74.60 inches |
| Wheelbase Length | 112.40 inches |
| Standard Seating | 4 |
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) | $86,700 |
| Invoice Price | $81,130 |
| Delivery Charges | $995 |
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What Problems Does the 2018 BMW 640 Have?
The 2018 BMW 640, being part of the final production year of its generation, generally benefits from accumulated refinements. However, like many luxury vehicles with complex systems, some owners have reported issues. One common area of concern across various BMW models of this era, including the 6 Series, involves the infotainment system (iDrive). Glitches, freezing screens, and connectivity issues have been noted. While not specific to 2018, earlier models within this generation sometimes experienced oil leaks from the valve cover gasket or oil pan, which could be a costly repair if left unaddressed. The transmission, while generally robust, can sometimes exhibit hesitant shifting or transmission control module (TCM) issues, particularly if maintenance schedules are not strictly followed.
Electrical gremlins can also surface in higher-mileage luxury cars. This can manifest as non-functioning sensors, issues with power windows, or problems with interior lighting. While specific recalls for the 2018 640 might be limited, it's always advisable to check the NHTSA website for any outstanding recalls pertaining to the VIN. Some owners have also mentioned the potential for suspension component wear over time, especially with larger wheel options, leading to a firmer ride or the need for replacement of bushings or shocks. The twin-turbochargers on the inline-six engine are generally reliable but require consistent maintenance, including timely oil changes, to ensure longevity. For the 2018 model year specifically, there aren't widespread, model-defining problems that were unique to it. However, general BMW reliability concerns regarding complex electronics and potential for expensive repairs on components like the turbochargers, transmission, and advanced driver-assistance systems (if equipped) should be considered.
Electrical gremlins can also surface in higher-mileage luxury cars. This can manifest as non-functioning sensors, issues with power windows, or problems with interior lighting. While specific recalls for the 2018 640 might be limited, it's always advisable to check the NHTSA website for any outstanding recalls pertaining to the VIN. Some owners have also mentioned the potential for suspension component wear over time, especially with larger wheel options, leading to a firmer ride or the need for replacement of bushings or shocks. The twin-turbochargers on the inline-six engine are generally reliable but require consistent maintenance, including timely oil changes, to ensure longevity. For the 2018 model year specifically, there aren't widespread, model-defining problems that were unique to it. However, general BMW reliability concerns regarding complex electronics and potential for expensive repairs on components like the turbochargers, transmission, and advanced driver-assistance systems (if equipped) should be considered.
How long will the 2018 BMW 640 last?
Based on owner data and typical maintenance, a 2018 BMW 640 can reasonably be expected to provide 150,000 to 200,000 miles of service. Long-term durability is generally good, especially if consistently serviced at recommended intervals. Weaknesses that tend to emerge over time include potential wear on suspension components, particularly bushings and control arms, and the aging of electronic modules within the iDrive system. The robust inline-six engine, when properly maintained, is known for its longevity. However, the complexity of the vehicle means that repairs to specialized systems can become more frequent and costly as mileage increases. Adhering to a strict maintenance schedule, including timely oil changes and fluid flushes, is paramount for maximizing its lifespan and minimizing costly repairs.
What Technology & Safety Features are Included?
The 2018 BMW 640 boasts a sophisticated suite of technology and safety features, reflecting its luxury grand tourer status. Standard technology included BMW's renowned iDrive infotainment system, operated via a 10.2-inch high-resolution display with a central control knob and touchpad. This system managed navigation, audio, Bluetooth connectivity, and vehicle settings. A premium audio system, typically a 12-speaker Harman Kardon setup, was often standard, with an optional Bang & Olufsen system offering an even more immersive experience.
Driver-assistance features were a strong point, with many available as part of optional packages. Standard safety features included a comprehensive airbag system, anti-lock brakes, stability control, and traction control. Parking sensors front and rear were also standard, aiding maneuverability.
Optional driver-assistance and safety features often included:
Crash-test ratings for the 2018 BMW 6 Series are generally strong, reflecting BMW's commitment to safety. While specific ratings can vary slightly depending on the testing agency and year, the 6 Series typically received good marks in frontal, side, and rear impact tests from organizations like the NHTSA and IIHS. However, it is important to note that the 6 Series was not subjected to the full battery of tests by organizations like the IIHS in its final model year as extensively as newer designs, and specific ratings should be verified on their respective websites. The advanced structural design and comprehensive airbag system contribute to its overall safety profile.
Driver-assistance features were a strong point, with many available as part of optional packages. Standard safety features included a comprehensive airbag system, anti-lock brakes, stability control, and traction control. Parking sensors front and rear were also standard, aiding maneuverability.
Optional driver-assistance and safety features often included:
- Adaptive Cruise Control with Stop & Go: Maintains a set speed and distance from the vehicle ahead, capable of bringing the car to a complete stop and resuming.
- Lane Departure Warning: Alerts the driver if the vehicle unintentionally drifts out of its lane.
- Blind Spot Monitoring: Detects vehicles in the blind spots and provides visual warnings.
- Head-Up Display (HUD): Projects key information like speed and navigation onto the windshield.
- Surround View Camera System: Provides a 360-degree view around the vehicle, enhancing parking and low-speed maneuverability.
- Active Park Assist: Helps the driver find parking spots and can automate the steering for parallel parking.
Crash-test ratings for the 2018 BMW 6 Series are generally strong, reflecting BMW's commitment to safety. While specific ratings can vary slightly depending on the testing agency and year, the 6 Series typically received good marks in frontal, side, and rear impact tests from organizations like the NHTSA and IIHS. However, it is important to note that the 6 Series was not subjected to the full battery of tests by organizations like the IIHS in its final model year as extensively as newer designs, and specific ratings should be verified on their respective websites. The advanced structural design and comprehensive airbag system contribute to its overall safety profile.
What Colors Options are Available?
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In the meantime, feel free to explore the other sections for more content.
2018 BMW 640 Prices and Market Value
When new, the 2018 BMW 640 had a starting MSRP that typically ranged from around $78,000 for the coupe to upwards of $90,000 for the convertible and Gran Coupe variants, before factoring in options and M Sport packages. Currently, the used market prices for a 2018 BMW 640 vary significantly based on mileage, condition, body style (coupe, convertible, Gran Coupe), and optional equipment. Expect to find them ranging from approximately $30,000 to $50,000. The 6 Series experienced a substantial depreciation from its original MSRP, which is typical for luxury vehicles, especially as it was nearing the end of its generation. Factors affecting its resale value include its relatively low production numbers compared to mainstream sedans, its timeless styling, and the continued desirability of BMW's refined performance and luxury. Well-maintained examples with lower mileage and desirable option packages will command higher prices.
2018 BMW 640 Cost of Ownership
The 2018 BMW 640 is generally considered costly to own, primarily due to its luxury status and sophisticated engineering. Insurance premiums will be higher than for a comparable sedan due to the vehicle's value and performance. Fuel costs, while not exorbitant for the 315-hp engine, will be more than a smaller, less powerful car. Maintenance and repair costs are where the significant expense lies. Routine servicing, including oil changes and fluid checks, can be pricier at a BMW dealership. However, unexpected repairs to complex systems like the transmission, electronics, or turbochargers can be particularly expensive. This is not an economical vehicle to own; it is a luxury purchase with associated premium running costs.
2018 BMW 640 Fuel Efficiency
Fuel Type
Gasoline
Fuel Capacity
18.50 gallons
City Mileage
20 miles/gallon
Highway Mileage
29 miles/gallon
2018 BMW 640 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
0 months / No data
Estimated remaining
Expired
2018 BMW 640 Insurance
Insurance for a 2018 BMW 640 is moderately priced, reflecting its status as a Convertible with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 2018 BMW 640 Compare to Other Convertible?
The 2018 BMW 640 competed in a segment of stylish and performance-oriented luxury coupes and grand tourers. Its primary rivals included the Mercedes-Benz E-Class Coupe/Convertible and the Audi A7 (which shared its chassis with the 6 Series Gran Coupe).
Performance: The 640i's turbocharged inline-six offered a potent and refined power delivery, with a strong emphasis on smooth acceleration. While excellent, rivals like the E-Class Coupe often offered more potent V8 options in higher trims (e.g., E450, AMG E53) for those seeking even greater performance. The Audi A7, particularly in its higher trims, also delivered strong performance. The 640's handling was typically praised for its balance of comfort and sportiness.
Features: All three offered luxurious interiors with high-quality materials and advanced technology for their time. The BMW's iDrive system was considered intuitive and feature-rich. Mercedes often led in terms of sheer opulence and comfort-oriented features, while Audi excelled in minimalist interior design and its virtual cockpit (in later models).
Reliability: Historically, BMW and Mercedes-Benz have had similar reliability reputations in this segment, with complex electronics being a common point of potential concern as they age. Audi has sometimes lagged slightly behind its German counterparts in long-term reliability studies for these luxury segments. The 2018 640, being a final-year model, likely benefited from early-generation refinements.
Price: The 640 generally fit within the pricing structure of its rivals, often starting slightly higher than a comparable E-Class Coupe but potentially lower than a similarly equipped Audi A7. Used prices for the 2018 640 now reflect significant depreciation, making it a potentially good value proposition.
Recommendations:
Performance: The 640i's turbocharged inline-six offered a potent and refined power delivery, with a strong emphasis on smooth acceleration. While excellent, rivals like the E-Class Coupe often offered more potent V8 options in higher trims (e.g., E450, AMG E53) for those seeking even greater performance. The Audi A7, particularly in its higher trims, also delivered strong performance. The 640's handling was typically praised for its balance of comfort and sportiness.
Features: All three offered luxurious interiors with high-quality materials and advanced technology for their time. The BMW's iDrive system was considered intuitive and feature-rich. Mercedes often led in terms of sheer opulence and comfort-oriented features, while Audi excelled in minimalist interior design and its virtual cockpit (in later models).
Reliability: Historically, BMW and Mercedes-Benz have had similar reliability reputations in this segment, with complex electronics being a common point of potential concern as they age. Audi has sometimes lagged slightly behind its German counterparts in long-term reliability studies for these luxury segments. The 2018 640, being a final-year model, likely benefited from early-generation refinements.
Price: The 640 generally fit within the pricing structure of its rivals, often starting slightly higher than a comparable E-Class Coupe but potentially lower than a similarly equipped Audi A7. Used prices for the 2018 640 now reflect significant depreciation, making it a potentially good value proposition.
Recommendations:
- Similar Alternative: The Audi A7 (particularly 2016-2018 models) is a very similar competitor, especially the Gran Coupe version of the 640. It offers a sleek design, Quattro all-wheel-drive, and a refined interior.
- More Performance-Oriented: If outright performance is a priority, consider higher trims of the Mercedes-Benz E-Class Coupe (e.g., E450, AMG E53) or even a Porsche Panamera (though likely at a higher price point).
- Comfort-Focused: For a more comfort-oriented and perhaps slightly more opulent experience, the Mercedes-Benz E-Class Coupe/Convertible is an excellent choice.
- Newer Option (if budget allows): The BMW 8 Series (which replaced the 6 Series) offers a more modern take on the grand touring concept, though at a significantly higher price point.
Final Verdict: Is the 2018 BMW 640 a Good Convertible?
The 2018 BMW 640 is ideal for discerning buyers seeking a luxurious, stylish, and engaging grand tourer that prioritizes comfort and performance over outright sportiness. It's perfect for individuals or couples who appreciate elegant design, a refined driving experience, and a well-appointed interior for long journeys.
It is worth buying, especially on the used market. Given its substantial depreciation from new, it offers a compelling value proposition for a premium luxury vehicle. Buying used is highly recommended; purchasing new would be for those prioritizing the latest technology and warranty over cost savings.
When buying, focus on well-maintained examples. The Gran Coupe offers more practicality for those needing rear-seat access. Opting for a model with desirable packages like the M Sport or driver assistance features can enhance the ownership experience, provided the vehicle has a documented maintenance history to mitigate potential repair costs down the line.
It is worth buying, especially on the used market. Given its substantial depreciation from new, it offers a compelling value proposition for a premium luxury vehicle. Buying used is highly recommended; purchasing new would be for those prioritizing the latest technology and warranty over cost savings.
When buying, focus on well-maintained examples. The Gran Coupe offers more practicality for those needing rear-seat access. Opting for a model with desirable packages like the M Sport or driver assistance features can enhance the ownership experience, provided the vehicle has a documented maintenance history to mitigate potential repair costs down the line.
Drew B
Drew is a seasoned automotive expert and contributor to VinCheck.info. With nearly 15 years of experience as a former Porsche technician, he brings a wealth of hands-on knowledge to his writing. Born in North Carolina, a region renowned for its deep-rooted NASCAR culture, Drew developed a passion for cars early in life, often building and working on vehicles from a young age. At VINCheck, Drew leverages his extensive technical background to provide in-depth analyses of various vehicles. His articles often focus on engine performance, reliability, and maintenance insights, offering readers practical information grounded in real-world experience. Some of his notable contributions include reviews on the Mazda CX-5's longevity and detailed examinations of engine options for models like the 2011 Toyota Camry and Tacoma