Spark Plug Replacement in the area around San Marco, Jacksonville, FL averages $162.00, with prices ranging from $100.00 to $199.99 based on 12 verified prices from 12 nearby shops.
Showing nearby shops within 25 mi of San Marco · June 2026
Spark Plug Replacement prices in San Marco, Jacksonville, FL range from $100.00 to $199.99 at local auto repair shops, based on verified pricing data gathered from 12 shops across the area. Spark plugs ignite the air-fuel mixture in each engine cylinder with a precisely timed electrical spark. Prices for this service in San Marco vary by vehicle make and model, the grade of parts and fluids used, and whether you book with an independent shop, a franchise chain, or a dealership. Independent and chain repair shops in San Marco typically charge 20 to 40 percent less than dealerships for this service; dealerships may justify the premium for warranty-covered work or brand-specific diagnostics. All prices listed on this page were verified directly from shop websites or user-submitted receipts, and each carries a Last Verified date. For details on how PriceMyFix verifies prices, visit pricemyfix.com/about/methodology.
| Shop | Type | Price | Details | Verified | Distance | Actions |
|---|---|---|---|---|---|---|
| Da Vinci Automotive2362 Emerson Street | Dealership | $149.99- $249.99 | Last verified 32 days agoby PriceMyFix | 2.1 mi | View Shop | |
| Cars Of Jax Inc8218 Beach Boulevard | Dealership | $149.99 | Last verified 44 days agoby PriceMyFix | 5.0 mi | View Shop | |
| RC Mobile Mechanic8365 Dix Ellis Trail | Independent | $100.00- $200.00Below avg | Last verified 40 days agoby PriceMyFix | 8.2 mi | View Shop | |
| Miller's Automotive2175 Kingsley Avenue | Independent | $149.99 | Last verified 40 days agoby PriceMyFix | 11.4 mi | View Shop | |
| Tire Kingdom375 Blanding Boulevard | Independent | $199.99Above avg | Last verified 40 days agoby PriceMyFix | 11.6 mi | View Shop | |
| Jax Cruisers - Mobile Mechanic317 2nd Street | Independent | $199.99Above avg | Last verified 32 days agoby PriceMyFix | 15.3 mi | View Shop | |
| Tony's European Auto Service Inc.350 2nd Avenue South | Independent | $149.99 | Last verified 40 days agoby PriceMyFix | 15.7 mi | View Shop | |
| WorldWide Automotive2490 County Road 220 | Independent | $199.99Above avg | Last verified 40 days agoby PriceMyFix | 16.1 mi | View Shop | |
| Chris Stevens Auto Repair LLC1675 Florida 16 | Independent | $199.99Above avg | Last verified 40 days agoby PriceMyFix | 31.9 mi | View Shop | |
| WRENCHMAN AUTOMOTIVE LLC23 Pacific Street | Independent | $149.99 | Last verified 40 days agoby PriceMyFix | 33.7 mi | View Shop | |
| JONES DEPARTMENT SERVICES23 Pacific Street | Independent | $150.00 | Verified todayby PriceMyFix | 33.7 mi | View Shop | |
| Atlantic Automotive155 A1A Beach Boulevard | Independent | $149.99 | Last verified 32 days agoby PriceMyFix | 38.4 mi | View Shop |
The average spark plug replacement in San Marco, Jacksonville, FL costs $162.49 across 12 shops. The cheapest verified price is $100.00 at RC Mobile Mechanic.
Trucks and SUVs with higher oil capacity may cost more. Check individual shop listings for vehicle-specific pricing.
Spark plugs ignite the air-fuel mixture in each engine cylinder with a precisely timed electrical spark. Modern iridium or platinum plugs have a tiny center electrode that can fire reliably for 60,000–100,000 miles. Over time, the electrode erodes, the gap widens, and the ceramic insulator can foul with carbon deposits. Worn plugs require more voltage to fire, which stresses the ignition coils. They can also cause incomplete combustion, which shows as a rough idle, reduced fuel economy, occasional misfire, or a check-engine light (P0300 series codes).
Replace at the manufacturer's specified interval: 30,000 miles for copper, 60,000 for platinum, 100,000 for iridium. Replace sooner if: (1) you notice rough idle, hesitation on acceleration, or a missed-cylinder feeling, (2) check-engine light with P0300 (random misfire), P030X (specific cylinder misfire), or P0301–P0308, (3) fuel economy has dropped unexplainably — worn plugs reduce combustion efficiency 2–4%, (4) hard starting in damp conditions — worn plugs have higher misfire rates in moisture.
One badly worn plug can cause a misfire that damages the catalytic converter — unburned fuel enters the exhaust and overheats the catalyst. Cat replacement runs $1,000–$2,500. That's the worst-case from ignoring bad plugs too long. Before that: rough running, reduced power, 3–5% MPG loss, and the check-engine light failing your emissions test (in states that require it). Plugs are a relatively inexpensive job ($120–$300 for a 4-cylinder, $200–$600 for a V8) that prevents cascading, more expensive ignition system repairs.
Spark plug replacement is frequently misquoted: (1) get a per-plug count quote, not just a flat price — a 4-cylinder has 4 plugs, a V6 has 6, a V8 has 8; some shops quote a low price based on 4 plugs then charge extra per additional plug, (2) always replace all plugs at the same visit — mixing new and worn plugs creates uneven ignition timing across cylinders, (3) V6 transverse-mounted engines (Explorer, Traverse, Pathfinder) have extremely difficult-to-access rear bank plugs requiring intake manifold removal — labor can be 2–4 hours, which is normal and legitimate for those vehicles, (4) shops that suggest 'platinum upgrade' plugs when iridium are already specified for your vehicle — iridium is the superior material; no further upgrade exists at the OEM level.
All prices verified from public sources and user submissions. Learn about our verification methodology.
