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2018 BMW 6-Series Overview, Reviews, Ratings & Specs

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Simon A | September 24, 2025
The 2018 BMW 6-Series represents a blend of luxury and performance, evolving from its grand tourer roots. Available as a Gran Coupe (four-door coupe), a Coupe, and a Convertible, the 6-Series caters to diverse tastes. Key trims include the 640i, 650i, and the performance-oriented M6. Pricing ranges from approximately $70,000 to over $100,000 depending on the trim and options. It stands out for its elegant design, powerful engine options, and a comfortable, feature-rich interior, appealing to buyers seeking a luxurious and sporty driving experience.
The Good

The 2018 BMW 6-Series boasts strong engine performance and luxurious comfort. Its sleek design provides emotional appeal, while available driver-assistance tech and a spacious interior offer practical value. While not the most fuel-efficient, its performance is a key selling point. Reliability is generally good, though maintenance can be costly. The Gran Coupe adds practicality with four doors.

The Bad

Potential weaknesses of the 2018 BMW 6-Series include potentially high maintenance costs, particularly for complex systems. The rear seats can be cramped, especially in the Coupe and Convertible. Some owners have reported issues with the iDrive system. Also, depreciation can be significant, especially in the first few years. Be wary of models with a history of deferred maintenance.

2018 BMW 6-Series: Quick Overview

  • Engine Options:
    • 640i: 3.0-liter turbocharged inline-6
    • 650i: 4.4-liter twin-turbocharged V8
    • M6: 4.4-liter twin-turbocharged V8 (high-performance)
  • Horsepower:
    • 640i: 315 hp
    • 650i: 445 hp
    • M6: 560 hp (Competition Package: 600 hp)
  • Fuel Economy (EPA Estimated):
    • 640i: 21 mpg city / 30 mpg highway
    • 650i: 17 mpg city / 25 mpg highway
    • M6: 15 mpg city / 22 mpg highway
  • 0-60 Times:
    • 640i: Approximately 5.1 seconds
    • 650i: Approximately 4.3 seconds
    • M6: Approximately 3.9 seconds
  • Towing Capacity: The BMW 6-Series is not typically used for towing, and official towing capacity figures are generally not provided.
  • Trim-Level Features:
    • 640i: Leather upholstery, navigation system, rearview camera, parking sensors, adaptive LED headlights, heated front seats, dual-zone automatic climate control, iDrive infotainment system with a 10.2-inch display.
    • 650i: All 640i features, plus upgraded leather, multi-contour seats, and a Harman Kardon surround-sound system.
    • M6: All 650i features (where applicable), plus high-performance brakes, adaptive M suspension, M-specific exterior styling, sport seats, and a carbon-fiber roof (Coupe). The M6 also boasts increased power and enhanced handling.

2018 BMW 6-Series Specifications

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Vehicle History Report

What Problems Does the 2018 BMW 6-Series Have?

Frequently reported problems for the 2018 BMW 6-Series can include issues with the iDrive infotainment system, such as glitches or slow performance. Some owners have reported electrical problems, including issues with sensors and control modules. Oil leaks, particularly in the V8 engines, are also a potential concern. Suspension components, such as bushings and control arms, may wear out over time, leading to handling issues. While not exceedingly common, some owners have mentioned concerns about the reliability of the turbochargers, especially in the higher-performance models.

Recalls for the 2018 6-Series should be checked via the NHTSA website using the VIN. Common BMW recalls sometimes address issues related to fuel pumps, airbags, or electrical systems.

Long-term reliability concerns generally revolve around the cost of maintaining a luxury vehicle with complex systems. Regular maintenance is crucial to prevent major issues. Potential buyers should have a pre-purchase inspection performed by a qualified mechanic familiar with BMW vehicles to identify any existing or potential problems. Models with detailed service records are generally preferable, as they indicate a commitment to proper maintenance.

How long will the 2018 BMW 6-Series last?

With proper maintenance, a 2018 BMW 6-Series can reasonably provide 150,000 to 200,000 miles or 10-15 years of service. Longevity depends heavily on adherence to the recommended maintenance schedule. Long-term durability can be affected by the car's complex electronic systems, which may experience failures over time. Suspension components and bushings are also potential wear points. Preventative maintenance, such as regular fluid changes and inspections, is key to maximizing the lifespan of the vehicle. Models driven in harsh climates may experience accelerated wear and tear. Neglecting maintenance will significantly shorten the lifespan.

What Technology & Safety Features are Included?

The 2018 BMW 6-Series comes equipped with a range of built-in tech and safety features. The iDrive infotainment system, with a 10.2-inch display, provides navigation, multimedia controls, and vehicle settings. Standard entertainment features include a premium audio system (Harman Kardon on some trims), Bluetooth connectivity, and USB ports.

Standard driver-assistance features include a rearview camera, parking sensors, and adaptive LED headlights. Optional features include adaptive cruise control, lane departure warning, blind-spot monitoring, and a head-up display. These systems enhance safety and convenience for the driver.

Safety features include multiple airbags, stability control, and anti-lock brakes. Available crash-test ratings from the IIHS and NHTSA should be consulted for specific safety performance data. While official ratings may vary depending on the body style, BMW generally prioritizes safety in its vehicle designs. The 6-Series also offers optional features like night vision with pedestrian detection. BMW ConnectedDrive services provide remote access, emergency services, and real-time traffic information.

What Colors Options are Available?

Exterior Colors
Alpine White
Black Sapphire Metallic
Glacier Silver Metallic
Mediterranean Blue Metallic
Sonic Speed Blue Metallic
Cashmere Silver Metallic
Melbourne Red Metallic
Carbon Black Metallic
Frozen Dark Brown Metallic
Tanzanite Blue Metallic
Interior Colors
Black Dakota Leather
Ivory White Dakota Leather
Cognac Dakota Leather
Black Nappa Leather
Ivory White Nappa Leather
Cognac Nappa Leather
Fineline Cove Matte Finish Wood Trim
Gray Poplar Wood Trim
Dark Coffee Fine Wood 'Fineline' Trim
Anthracite Headliner

2018 BMW 6-Series Prices and Market Value

When new, the 2018 BMW 6-Series had an MSRP ranging from approximately $70,000 to over $100,000, depending on the trim and options. Current used market prices range from around $30,000 to $50,000+, varying based on mileage, condition, and trim level. Depreciation is significant for luxury vehicles like the 6-Series. Factors affecting resale value include the vehicle's condition, mileage, service history, and any accidents or damage. Higher trim levels and models with desirable options tend to hold their value better. Certified pre-owned vehicles often command a premium due to the extended warranty coverage.

2018 BMW 6-Series Cost of Ownership

Owning a 2018 BMW 6-Series is generally considered costly. Insurance premiums are higher due to the vehicle's value and performance capabilities. Fuel costs can be substantial, particularly with the V8 engines. Maintenance and repair costs are also above average, as BMW parts and labor are typically expensive. Regular maintenance is crucial to prevent costly repairs. Overall, long-term ownership costs should be carefully considered before purchasing this vehicle. It's not an economical choice, but a luxurious one with associated expenses.

2018 BMW 6-Series Fuel Efficiency

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2018 BMW 6-Series Insurance

Insurance for a 2018 BMW 6-Series is moderately priced, reflecting its status as a Vehicle with strong safety ratings and
reasonable repair costs.

How Does the 2018 BMW 6-Series Compare to Other Vehicle?

The 2018 BMW 6-Series competes with vehicles like the Mercedes-Benz CLS-Class, Audi A7, and Porsche Panamera. In terms of performance, the 6-Series offers comparable power and handling to its rivals, though the Panamera may offer a sportier driving experience. Features are generally similar across these models, with all offering luxury amenities and advanced technology. Reliability is a mixed bag; some BMW owners report issues, while Mercedes-Benz and Audi also have potential maintenance concerns.

The Panamera and CLS offer more modern interiors compared to the 6 series. In terms of price, the 6-Series is typically in line with its German competitors. The Audi A7 often provides a slightly better value proposition.

Alternatives to consider include the Mercedes-Benz E-Class Coupe or Sedan for a blend of luxury and comfort, or the Porsche Panamera for superior performance. Depending on priorities, the Audi S7 or RS7 could also be suitable alternatives. Ultimately, the best choice depends on individual preferences and priorities.

Final Verdict: Is the 2018 BMW 6-Series a Good Vehicle?

The 2018 BMW 6-Series is ideal for buyers seeking a luxurious and sporty grand tourer with a stylish design and powerful engine options. It's worth buying used if you prioritize luxury and performance over the latest technology and are prepared for potentially higher maintenance costs. Purchasing a well-maintained example with a comprehensive service history is crucial. The Gran Coupe offers added practicality for those needing rear passenger space. The M6 appeals to enthusiasts seeking maximum performance. However, buyers should carefully weigh the ownership costs and consider alternatives if budget is a primary concern.

2018 BMW 6-Series Owner Reviews

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Simon A

Simon is a contributor to VinCheck, where he provides articles and reviews on various automotive topics. His work focuses on delivering accurate and up-to-date information about used cars, helping readers make informed decisions.