Back to Bmw
Official AutoWiki Guide

Bmw Bmw I8

Find Me One
```html

BMW i8: A Comprehensive Guide

The BMW i8 is a groundbreaking plug-in hybrid sports car that represents BMW's forward-thinking approach to performance and sustainability. First unveiled as a concept in 2009, the i8 entered production in 2014 and continued until 2020. It falls into the category of a performance-oriented plug-in hybrid sports car, aiming to deliver the thrills of a sports car with significantly reduced emissions and fuel consumption. Its striking design, innovative use of carbon fiber reinforced plastic (CFRP), and advanced powertrain technologies set it apart from traditional sports cars and cemented its place as an icon of electrification.

Generations

First Generation (2014-2020)

  • Model Years: 2014, 2015, 2016, 2017, 2018, 2019, 2020
  • Key Changes:
    • 2014-2017 (Pre-LCI): Original i8 Coupe. Powered by a 1.5-liter turbocharged three-cylinder engine paired with an electric motor, producing a combined 357 horsepower. Battery capacity was 7.1 kWh.
    • 2018-2020 (LCI - Life Cycle Impulse): Introduction of the i8 Coupe and i8 Roadster (convertible). Powertrain upgraded to a combined 369 horsepower. Battery capacity increased to 11.6 kWh, improving electric range. Styling updates included revised headlights, taillights, and interior trim. New wheel designs were also introduced. The eDrive system was improved for better electric-only performance.

Reliability & Common Issues

The BMW i8, while innovative, has its share of reliability considerations. It's crucial to understand these before purchasing a used model.

Powertrain (Engine and Electric Motor)

  • Engine: The 1.5-liter three-cylinder engine is generally robust. However, issues like oil leaks and occasional sensor failures have been reported. Regular maintenance, including oil changes and spark plug replacements, is crucial to prevent premature wear. Listen for unusual noises or rough idling, which could indicate engine problems.
  • Electric Motor and Battery: The electric motor is generally reliable. Battery degradation is a factor to consider in older models. Pay attention to the displayed electric range and compare it to the original specifications. Significant degradation can impact the overall driving experience. Also, inspect the battery cooling system for leaks or damage, as this system is vital for battery longevity.
  • Hybrid System: The integration of the engine and electric motor can sometimes lead to complex issues. Look for warning lights related to the hybrid system. A diagnostic scan is highly recommended before purchasing to identify any stored fault codes.

Transmission

  • The i8 utilizes a six-speed automatic transmission for the engine and a two-speed automatic transmission for the electric motor. Check for smooth shifting during both electric and hybrid driving modes. Jerky shifts or unusual noises could indicate transmission issues. Fluid changes at recommended intervals are essential.

Electrical System

  • The i8 is heavily reliant on its electrical system. Check for issues with the infotainment system, power windows, and other electrical components. Battery drain can be a concern if the car is left unused for extended periods. Ensure all charging functions are working correctly.

Suspension and Brakes

  • The i8's suspension is generally reliable but check for worn bushings or damaged shocks, especially on models with higher mileage. The braking system uses regenerative braking, which can extend brake pad life. However, inspect the brake pads and rotors for wear and tear. The regenerative braking system should function smoothly without any unusual noises or vibrations.

Body and Interior

  • CFRP Body Panels: While strong, CFRP can be expensive to repair if damaged. Carefully inspect the body panels for cracks, dents, or other signs of damage. Ensure that all body panels are properly aligned.
  • Interior: Check for wear and tear on the seats, dashboard, and other interior components. Ensure that all electronic features, such as the infotainment system and climate control, are functioning correctly.

Driving Experience

The BMW i8 offers a unique and exhilarating driving experience, blending the thrill of a sports car with the efficiency of a hybrid.

Pros:

  • Striking Design: The i8's futuristic design is a head-turner. Its low-slung profile, scissor doors, and aerodynamic lines make it a true automotive icon.
  • Performance: The combination of the turbocharged engine and electric motor delivers impressive acceleration and responsiveness. The i8 can accelerate from 0 to 60 mph in around 4.4 seconds (Coupe) or 4.6 seconds (Roadster).
  • Fuel Efficiency: The i8 offers excellent fuel economy for a sports car, thanks to its plug-in hybrid powertrain. Electric-only range is sufficient for short commutes.
  • Handling: The i8's lightweight construction and well-tuned suspension provide agile and responsive handling. It feels planted and confident in corners.
  • Electric Driving: The ability to drive in electric-only mode provides a silent and emission-free driving experience.

Cons:

  • Limited Rear Seating (Coupe): The rear seats in the i8 Coupe are small and best suited for children or cargo.
  • Entry and Exit: The low seating position and scissor doors can make entry and exit a bit challenging, especially for taller individuals.
  • Maintenance Costs: The i8 can be expensive to maintain, especially if it requires repairs to the hybrid system or CFRP body panels.
  • Road Noise: The i8 can be prone to road noise, particularly at higher speeds.

Buying Advice

Purchasing a used BMW i8 requires careful consideration. Here's some advice to help you make the right decision:

Years to Look For:

  • 2018-2020 (LCI Models): These models offer improved performance, increased battery capacity, and updated styling. The increased electric range and enhanced powertrain make them a more desirable choice. The Roadster version is also an option within these years.

Years to Avoid (or Exercise Caution):

  • 2014-2015: While not necessarily to be avoided entirely, these earlier models have the lowest battery capacity and might show more signs of wear and tear. Thorough inspection and a pre-purchase inspection are essential.

Key Considerations:

  • Pre-Purchase Inspection: A pre-purchase inspection by a qualified mechanic who is familiar with hybrid vehicles is essential. This inspection should include a thorough check of the powertrain, battery, electrical system, and body panels.
  • Battery Health: Have the battery's state of health checked. A significant reduction in electric range can indicate battery degradation. Ask for documentation of battery health checks, if available.
  • Maintenance Records: Review the car's maintenance records to ensure that it has been properly maintained. Look for evidence of regular oil changes, fluid changes, and other necessary maintenance procedures.
  • Accident History: Check the car's accident history to see if it has been involved in any accidents. Even minor accidents can affect the car's structure and performance, especially with CFRP construction.
  • Charging Infrastructure: Consider your access to charging infrastructure. Owning an i8 is much more convenient if you have access to a Level 2 charger at home or work.
  • Test Drive: Take the car for an extended test drive in various driving conditions. Pay attention to the car's acceleration, handling, and braking performance. Listen for any unusual noises or vibrations. Test both electric and hybrid driving modes.
  • Warranty: Check if the car is still under warranty. If not, consider purchasing an extended warranty to protect yourself against potential repair costs.

By following this guide and carefully considering these factors, you can make an informed decision and enjoy the unique driving experience of a BMW i8.

```