The BMW i8 is a futuristic plug-in hybrid sports car that combines a 1.5L turbocharged 3-cylinder petrol engine with an electric motor. Known for its lightweight carbon-fiber structure and advanced hybrid system, the i8 delivers impressive performance with high efficiency.
In this guide, we cover BMW i8 engine specifications, oil type, oil capacity, oil change interval, maintenance cost, and service tips to help owners maintain this advanced hybrid sports car properly.
BMW i8 Engine Overview
The BMW i8 features a unique hybrid powertrain consisting of a small-displacement turbocharged petrol engine paired with an electric motor. This setup delivers strong acceleration while maintaining excellent fuel efficiency.
The internal combustion engine is based on BMW’s B38 1.5L 3-cylinder turbo engine, used in combination with an electric drive system powering all four wheels.
Key Highlight: The BMW i8 produces up to ~369–374 horsepower combined output with instant electric torque assistance.
BMW i8 Engine Specifications
BMW i8 Engine Oil Type
The BMW i8 petrol engine requires high-quality fully synthetic engine oil that meets BMW Longlife specifications.
- Recommended Oil Grade: 5W-30 or 0W-30 Full Synthetic
- BMW Specification: BMW Longlife-04 / LL-14 FE
- Alternative Grade: 0W-40 (depending on climate)
Best Oil Choice: BMW-approved 5W-30 full synthetic oil ensures proper turbo lubrication and hybrid engine protection.
BMW i8 Oil Capacity
The BMW i8 has a relatively small engine oil capacity due to its compact 1.5L turbo engine.
BMW i8 Oil Change Interval
Although BMW recommends long service intervals, real-world driving conditions often require earlier oil changes for better engine protection.
- Normal Driving: 8,000 – 10,000 miles
- City Driving: 6,000 – 8,000 miles
- Severe Conditions: 5,000 – 6,000 miles
BMW i8 Oil Change Cost
- DIY Cost: $60 – $110
- Independent Workshop: $120 – $200
- BMW Dealership: $180 – $350
Maintenance Tips for BMW i8
- Always use BMW Longlife-approved synthetic oil
- Do not extend oil intervals excessively
- Check oil level regularly using iDrive system
- Replace oil filter at every service
- Maintain hybrid cooling system health
- Avoid aggressive driving when engine is cold
Frequently Asked Questions (FAQ)
What oil does BMW i8 use?
The BMW i8 uses 5W-30 or 0W-30 full synthetic oil meeting BMW Longlife-04 or LL-14 FE standards.
How much oil does BMW i8 take?
The BMW i8 takes approximately 4.2 to 5.2 quarts of engine oil depending on model year.
How often should BMW i8 oil be changed?
Typically every 8,000–10,000 miles, but earlier for city or heavy driving conditions.
Is BMW i8 expensive to maintain?
Maintenance is moderate to high due to hybrid components, with oil change costs around $120–$350 depending on service type.
Final Thoughts
The BMW i8 remains one of the most innovative hybrid sports cars ever built. Proper oil maintenance, using BMW-approved synthetic oil, and following correct service intervals are essential for keeping the engine and hybrid system performing efficiently.
Quick Summary
- Oil Type: 5W-30 / 0W-30 Full Synthetic
- Oil Capacity: 4.2 – 5.2 Quarts
- Oil Change Interval: 6,000 – 10,000 Miles
- Best Practice: Use BMW Longlife-approved oil only