Frequently Asked Questions

What does it mean when the check engine light comes on in a 2016 BMW i8?

• It signals that the vehicles onboard diagnostics detected a system issue — anything from a loose fuel cap to an emissions or engine performance fault. Our technicians at Nalley BMW of Decatur use factory-level tools to identify the exact code and cause.
• We often find that dealership diagnostics are more comprehensive and cost-effective over time: faster repairs, OEM parts, and fewer repeat visits mean immediate savings and lower long-term ownership costs compared with some independent shops.
• If a repair is covered under warranty, it must be performed at a certified dealership to preserve coverage; our BMW-certified technicians handle warranty work properly and transparently.
• Ready to take next steps? You can schedule service online or check our current service specials.
• We offer service financing so you can get repairs now and pay later — ask our service advisors for details when you schedule appointment.

How long does a check engine light service take?

• Typical diagnostics and a clear course of action take about 45-90 minutes depending on the codes and whether road testing or smoke/leak testing is needed.
• If parts are required, we prioritize OEM parts and fast fulfillment through Nalley BMW of Decatur to minimize downtime and ensure proper fit and performance.
• Because our technicians are BMW-certified and factory-trained, repairs are completed efficiently and correctly, reducing the chance of repeat visits and saving you money over time.
• To reserve a convenient time, schedule service online and explore available discounts on our service specials.

How much does a check engine light diagnostic cost for a 2016 BMW i8?

• Diagnostic pricing varies by the complexity of the fault, but at Nalley BMW of Decatur we provide clear estimates and transparent pricing — typically competitive and often less than independent shops when factoring in correct OEM parts and workmanship.
• Choosing dealer service provides immediate savings through accurate diagnosis, prevents misdiagnosis costs, and protects long-term value with factory-trained technicians and warranty-backed repairs.
• We also offer service financing to make necessary repairs manageable now while preserving your vehicles performance and reliability.
• Book an appointment to get a precise diagnostic quote: schedule appointment and review current service specials.

What is the most common reason for check engine light on a 2016 BMW i8?

• Common issues include emissions-related faults, sensor (oxygen/MAP) failures, turbocharger-related codes, or fuel system irregularities — any of which can affect performance or economy.
• Addressing faults early at Nalley BMW of Decatur prevents catalytic converter damage or more costly repairs and typically preserves fuel efficiency and power delivery.
• All warranty-covered repairs must be performed at a certified dealership; our warranty service helps protect your vehicles long-term value and reduces ownership costs.
• To minimize risk, schedule service promptly and view our latest service specials.

What is the first thing to check when the check engine light comes on?

• Start with basics: secure the gas cap and check for obvious issues. Then bring your 2016 BMW i8 to Nalley BMW of Decatur for a proper scan — dealer diagnostics read BMW-specific codes and freeze-frame data other scanners may miss.
• Prompt dealer diagnosis reduces the chance of escalation, saving you money and preserving vehicle reliability.
• We provide clear repair plans, OEM parts, and technician expertise plus service financing so necessary work can begin immediately without delay.
• Use our online tool to schedule appointment and review savings on our service specials.