What are the best spark plugs for fuel efficiency? We’re sharing top recommendations based on real user experiences that improved mileage and engine performance.
Want better gas mileage from your car? We’ve found some great spark plugs that can help!
These plugs can boost power and save fuel. See how they make your engine run better. Get ready to save money at the gas pump.
I’ve heard drivers say, “I switched to iridium plugs and saw a noticeable improvement in my MPG!” and “My old car runs like new with these plugs.” Now, let’s find the perfect spark plug for you.
List of Top 10 Spark Plugs for Fuel Efficiency
| Image | Title | Best For | Price |
|---|---|---|---|
 |
E3 Spark Plugs E3.20 Lawn and Garden Spark Plug with DiamondFIRE Technology, 14mm, 0.750″ Reach, Gasket Seat, Power and Fuel Efficiency Enhancement, Pack of 1 |
This spark plug is perfect for homeowners and gardeners who want to make their lawn mowers, trimmers, or other small engines run stronger and use less gas. It helps anyone who cares about saving fuel, cutting down on smoke, and keeping their outdoor gear in top shape with easy swaps for common brands. |
|
 |
NGK # 3186 G-Power Platinum Spark Plugs TR5GP – 8 PCSNEW |
Want your engine to run like a dream? Then NGK # 3186 G-Power Platinum Spark Plugs are for you! They boost performance and keep your ride smooth. |
|
 |
E3 Spark Plugs E3.16 Lawn and Garden Spark Plug with DiamondFIRE Technology, Enhanced Power, Fuel Efficiency, and Emission Control (Pack of 1) |
This spark plug is perfect for homeowners with lawn mowers, generators, and other small engines. It gives better power, fuel efficiency, and lower emissions, plus longer life and a lifetime warranty for reliable performance. |
|
 |
E3 Spark Plugs E3.56 Autolite Copper Core Spark Plug, Leak-Proof Seal, Enhanced Heat Transfer, Durable Steel Shell, Prevents Misfires, Pack of 1 |
This spark plug is perfect for drivers who want more power and smoother starts. It’s ideal for small engines and modern cars seeking better fuel economy and lower emissions. |
|
 |
Micro Traders 2pcs CR8E Spark Plug Motorcycle Spark Plug Replacement Spark Plug 10mm Thread Improved Fuel Efficiency Compatible with SUZUKI YAMAHA BOSCH |
Are you looking to boost your motorcycle’s performance? Then these spark plugs are for you. They’re perfect for anyone needing a quick and easy replacement to get their engine running smoother than ever. |
|
 |
Autoexact Ignition Coil Pack and Iridium Spark Plugs Kit Fit for Subaru 2013-2020 BRZ 2013-2016 XV Toyota 86 2017-2020 2.0L L4, # UF710 UF720 93501 Set of 4, Restore Engine Power & Fuel Efficiency |
This kit is perfect for owners of Subaru BRZ (2013-2020), Subaru XV (2013-2016), and Toyota 86 (2017-2020) with a 2.0L engine. It helps fix misfires and rough idle fast. |
|
 |
E3 Spark Plugs E3.14 Premium Spark Plug for 2- and 4-Cycle Engines, Enhanced Performance and Fuel Efficiency, 14mm, 0.500″ Reach, Pack of 1 |
E3.14 spark plugs are perfect for anyone who owns a snowmobile, personal watercraft, or other powersport vehicle with a 2- or 4-stroke engine. They help you get more power, use less fuel, and cut down on harmful emissions. |
|
 |
TIKSCIENCE Iridium Spark Plugs Replace 4024123628 Fit for Ram 1500 Big Horn Crew Cab Pickup 4-Door 5.7L V8 GAS OHV 2011-2021 16Pcs |
This iridium spark plug kit is perfect for Ram 1500 owners who drive a Big Horn Crew Cab with a 5.7L V8 engine from 2011 to 2021. |
|
 |
ANPART Fuel Efficient Spark Plug BR8ES for 1988-2006 for Yamaha Blaster 200 8pcs |
This spark plug is perfect for Yamaha BLASTER 200 YFS200 riders who want fuel efficiency and a longer service life. With a pack of 8 plugs, it makes replacements easy and keeps your ride running smoothly. |
|
 |
NGK 95897 MR7F Standard Spark Plug |
This spark plug is perfect for car owners who want a strong spark and clean-running engine. It fits anyone who fixes cars and needs parts that last long without problems. |
Detailed Reviews
Discover the best spark plugs for fuel efficiency with our expert guide, backed by in-depth reviews and real customer feedback. Save fuel, boost power, and cut emissions using top picks like E3 DiamondFIRE and NGK Platinum options. Dive in now to find the perfect fit for your engine and enjoy smoother, longer-lasting rides.
1. E3 Spark Plugs E3.20 Lawn and Garden Spark Plug with DiamondFIRE Technology, 14mm, 0.750″ Reach, Gasket Seat, Power and Fuel Efficiency Enhancement, Pack of 1
Power up your lawn mower with the E3 Spark Plugs E3.20. This spark plug uses DiamondFIRE Technology for better engine work.
It sparks faster and burns fuel more fully. This creates cleaner air and less emissions. Your engine will run smoother and last longer too.
The plug fits many common types. It backs a limited lifetime guarantee. You get strong, reliable power every time.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This spark plug is perfect for homeowners and gardeners who want to make their lawn mowers, trimmers, or other small engines run stronger and use less gas. It helps anyone who cares about saving fuel, cutting down on smoke, and keeping their outdoor gear in top shape with easy swaps for common brands.
Ready to Purchase?
- 10 Best Spark Plugs for High Performance Engines: Boost Power
- 10 Best Mounting Studs for Air Cleaners – Smoother Airflow
- 10 Best OEM Spacer Compatible Studs: Easy Installation Guide
- 10 Best Auto Parts Assemblies: Smooth & Safe Rides Await
- 10 Best Stainless Steel Hose Assemblies: Leak-Proof
- 10 Best Stainless Braided Hoses: Leak-Proof Upgrades
- 10 Best Engine Air Filters: Boost Your Car Now
- 10 Best Performance AN Hose Assemblies to Supercharge Your Ride
2. NGK # 3186 G-Power Platinum Spark Plugs TR5GP – 8 PCSNEW
Upgrade your ride with the NGK #3186 G-Power Platinum Spark Plugs! These plugs are built for top performance.
They handle a wide heat range. Carbon buildup is not a problem. Enjoy a leak-free engine.
| Pros | Cons |
|---|---|
|
|
Perfect For:
Want your engine to run like a dream? Then NGK # 3186 G-Power Platinum Spark Plugs are for you! They boost performance and keep your ride smooth.
Ready to Purchase?
3. E3 Spark Plugs E3.16 Lawn and Garden Spark Plug with DiamondFIRE Technology, Enhanced Power, Fuel Efficiency, and Emission Control (Pack of 1)
The E3.16 Spark Plug fits many small engines in lawnmowers and generators. It uses DiamondFIRE Technology for better power and less fuel use. You get up to 12% more power and save up to 13% on fuel.
This plug cuts harmful emissions by up to 58% for a cleaner run. It lasts longer with a limited lifetime warranty for peace of mind.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This spark plug is perfect for homeowners with lawn mowers, generators, and other small engines. It gives better power, fuel efficiency, and lower emissions, plus longer life and a lifetime warranty for reliable performance.
Ready to Purchase?
4. E3 Spark Plugs E3.56 Autolite Copper Core Spark Plug, Leak-Proof Seal, Enhanced Heat Transfer, Durable Steel Shell, Prevents Misfires, Pack of 1
Upgrade your engine with the E3 Spark Plugs E3.56. It uses Diamondfire Technology for better heat transfer. This plug boosts power and delivers smoother rides.
Enjoy more power and better fuel economy right away. Your engine burns fuel cleaner to cut emissions. It even helps meet strict pollution rules.
This spark plug lasts long with tough materials. It comes with a 5-year warranty for peace of mind.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This spark plug is perfect for drivers who want more power and smoother starts. It’s ideal for small engines and modern cars seeking better fuel economy and lower emissions.
Ready to Purchase?
5. Micro Traders 2pcs CR8E Spark Plug Motorcycle Spark Plug Replacement Spark Plug 10mm Thread Improved Fuel Efficiency Compatible with SUZUKI YAMAHA BOSCH
Ready to boost your ride’s performance? These Micro Traders CR8E Spark Plugs are here to help. They fit many SUZUKI, YAMAHA, and BOSCH models.
These spark plugs offer a solid copper core. Expect a greater spark and improved fuel efficiency.
Easy to install. Better engine performance. Get yours today!
| Pros | Cons |
|---|---|
|
|
Perfect For:
Are you looking to boost your motorcycle’s performance? Then these spark plugs are for you. They’re perfect for anyone needing a quick and easy replacement to get their engine running smoother than ever.
Ready to Purchase?
6. Autoexact Ignition Coil Pack and Iridium Spark Plugs Kit Fit for Subaru 2013-2020 BRZ 2013-2016 XV Toyota 86 2017-2020 2.0L L4, # UF710 UF720 93501 Set of 4, Restore Engine Power & Fuel Efficiency
This kit restores peak performance and saves fuel. It gives stronger sparks for better acceleration and fuel economy.
It eliminates misfire and rough idle. The premium iridium plugs and durable coils ensure smooth running.
It is a direct replacement with easy DIY install. Check compatibility for your Subaru or Toyota. It comes with rigorous testing and a 2-year warranty.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This kit is perfect for owners of Subaru BRZ (2013-2020), Subaru XV (2013-2016), and Toyota 86 (2017-2020) with a 2.0L engine. It helps fix misfires and rough idle fast.
Ready to Purchase?
7. E3 Spark Plugs E3.14 Premium Spark Plug for 2- and 4-Cycle Engines, Enhanced Performance and Fuel Efficiency, 14mm, 0.500″ Reach, Pack of 1
The E3.14 spark plug fits 14mm threads and 0.500 inch reach. It works in many 2- and 4-cycle engines.
DIAMONDFIRE TECHNOLOGY creates an edge-to-edge spark path. That helps more complete burning. It can add power and save fuel.
A cleaner burn lowers emissions and reduces carbon buildup. It is built to last with a limited lifetime guarantee and fits as a direct replacement for common Champion and NGK plugs.
| Pros | Cons |
|---|---|
|
|
Perfect For:
E3.14 spark plugs are perfect for anyone who owns a snowmobile, personal watercraft, or other powersport vehicle with a 2- or 4-stroke engine. They help you get more power, use less fuel, and cut down on harmful emissions.
Ready to Purchase?
8. TIKSCIENCE Iridium Spark Plugs Replace 4024123628 Fit for Ram 1500 Big Horn Crew Cab Pickup 4-Door 5.7L V8 GAS OHV 2011-2021 16Pcs
TIKSCIENCE Iridium Spark Plugs fit your Ram 1500 Big Horn Crew Cab Pickup from 2011 to 2021. They replace part 4024123628 and come in a set of 16. Upgrade your 5.7L V8 engine with ease.
These plugs use a small iridium alloy center electrode for stronger sparks. You get better ignition and smoother starts. Power feels more direct during acceleration.
Iridium material lasts longer with high heat resistance. It cuts down on replacements. Install them simply, even if you are new to DIY.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This iridium spark plug kit is perfect for Ram 1500 owners who drive a Big Horn Crew Cab with a 5.7L V8 engine from 2011 to 2021.
It’s also great for DIY fans and new users who want to boost engine power and make easy upgrades without expert help.
Ready to Purchase?
9. ANPART Fuel Efficient Spark Plug BR8ES for 1988-2006 for Yamaha Blaster 200 8pcs
Discover the ANPART Fuel Efficient Spark Plug BR8ES for your 1988-2006 Yamaha Blaster 200. This 8-piece set powers your ride with top-notch efficiency.
These plugs cut fuel use and boost engine power right away. They last for a long time, so you change them less often. Enjoy worry-free rides full of fun.
ANPART spark plugs have great heat transfer to stop extra burning. They keep your engine safe and smooth. Order now and feel the difference.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This spark plug is perfect for Yamaha BLASTER 200 YFS200 riders who want fuel efficiency and a longer service life. With a pack of 8 plugs, it makes replacements easy and keeps your ride running smoothly.
Ready to Purchase?
10. NGK 95897 MR7F Standard Spark Plug
The NGK 95897 MR7F is a standard spark plug. It uses a solid copper core for a stronger spark.
A longer insulator nose helps prevent fouling. The corrugated ribs on the insulator help prevent flashover.
You’ll get a strong spark. It starts fast. Built for long life.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This spark plug is perfect for car owners who want a strong spark and clean-running engine. It fits anyone who fixes cars and needs parts that last long without problems.
Ready to Purchase?
Buying Guide
Want better gas mileage? New spark plugs can help. They boost power and save fuel. Get ready to save money.
Drivers love new spark plugs. One said, “MPG went up!” Another exclaimed, “My car runs new!” Find the perfect plug for you!
Here’s what to think about before you buy:
-
Engine Type: Know your engine. Some plugs fit cars. Others fit lawnmowers. Pick the right one!
-
Spark Plug Type: Choose the right material. Iridium lasts a long time. Platinum is another good choice. Copper is good and safe.
-
Heat Range: Plugs handle heat differently. A wide heat range is best. This prevents carbon buildup. Your engine will run right.
-
Technology: Look for special features. DiamondFIRE Technology burns fuel better. This makes your engine powerful. It also helps lower emissions.
-
Warranty: A warranty protects you. A limited lifetime guarantee is great. A long warranty gives peace.
-
Compatibility: Does it fit your car? Check the Subaru or Toyota fit. Make sure it is a direct replacement. Check for the right fit.