Frequently Asked Questions

How much does a check engine light diagnostic cost for a 2018 Alfa Romeo 4C?

• Typical dealer diagnostic fees range from modest flat rates to comprehensive inspections; many dealerships, including ours, offer transparent diagnostic pricing and periodic service specials. Check our Service Specials.
• When work is required, doing repairs at our certified dealership often costs less than independent shops over time because we use OEM parts, factory procedures, and avoid repeat repairs—delivering immediate and long-term savings.
• If the repair is covered by warranty, the work must be completed at a certified dealership to preserve coverage and ensure proper documentation.
• We provide a clear estimate before authorization and can schedule service quickly via Schedule Service.

What does it mean when the check engine light comes on in a 2018 Alfa Romeo 4C?

• The check engine light signals the vehicle’s onboard diagnostics detected an issue — anything from a loose fuel cap or evaporative leak to oxygen sensor faults, misfires, or catalytic converter problems.
• Common causes include EVAP leaks, sensor faults (MAF/O2), fuel trim issues, or ignition misfires; severity ranges from simple fixes to repairs that should be addressed promptly to avoid further damage.
• Our factory-trained technicians use Alfa Romeo diagnostic tools to identify root causes quickly and accurately, helping you save money by fixing only what’s necessary.
• Repairs covered under warranty must be performed at a certified dealership to maintain coverage and avoid future expenses.

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

• Start with the basics: ensure the fuel filler cap is fully tightened — a loose or damaged cap is a common, inexpensive cause and often clears the light after a few drive cycles.
• If tightening the cap doesn’t help, have a professional scan the vehicle’s OBD‑II codes; our technicians will perform a targeted diagnosis to prevent unnecessary parts replacement.
• Choosing dealership service preserves warranty benefits and often costs less over time because factory-trained techs use OEM parts and proper procedures.
• Use our Trade or inventory pages if you’re considering options after a diagnostic.

What is the most common reason for check engine light on a 2018 Alfa Romeo 4C?

• Common reasons include sensor issues (oxygen or mass airflow), ignition misfires, and EVAP system leaks; these problems often trigger codes that require targeted diagnostics.
• Sensor replacements and small repairs are less expensive when diagnosed correctly — our technicians minimize unnecessary parts swaps with precise factory diagnostics.
• Left unaddressed, these issues can lower fuel economy, increase emissions, and lead to costlier repairs like catalytic converter replacement.
• We emphasize immediate and long-term savings: certified repairs at our dealership protect your investment and warranty coverage.

How long does a check engine light service take?

• Simple diagnostics and minor fixes (e.g., tightening a fuel cap or clearing a transient code) can take less than an hour; more complex issues may require same-day or multi-day service depending on parts and diagnostic depth.
• Our factory-trained technicians use Alfa Romeo-specific tools to reduce diagnostic time and avoid repeat labor, which translates to lower overall cost compared with multiple independent attempts.
• If the repair is covered by warranty, service must be performed at a certified dealership — we handle paperwork and warranty claims to streamline the process.
• Schedule service online for a faster appointment: Schedule Service.