5 Best Spark Plugs For Toyota Corolla 2016

Choosing the right spark plugs for your 2016 Toyota Corolla matters because they directly affect how your engine runs, how much fuel you use, and how often you have to do maintenance. In this guide you’ll find dependable options—ranging from long‑life iridium plugs to budget copper replacements—so you can pick the one that fits your driving habits, budget, and performance needs.

I’ll explain why each choice stands out and what benefit it brings to you, whether you want longer service intervals, smoother idling, or the best value.

Top Picks

How We Selected These Spark Plugs

When choosing spark plugs for your 2016 Toyota Corolla you should focus on compatibility, material, longevity, and value. First, confirm the plug fits the 1.8L engine and the thread/gap specification (many Corolla 1.8L models use a 0.044″ gap or an OEM equivalent).

Material matters: iridium and platinum give longer life and more consistent sparks, while copper plugs are cheaper but wear faster. We weighed real customer ratings and reviews so you get products that perform in the real world.

Durability and service interval were important—longer life means fewer changes and lower long‑term cost. We also considered brand reputation, OE equivalence, and price to balance performance and value. Finally, ease of installation and clear fitment listings were included so you won’t run into surprises when you replace plugs yourself or hand them to a mechanic.

SHUJI SC16HR11 Spark Plugs (Pack Of 4)

If you drive a 2016 Toyota Corolla 1.8L, these SHUJI SC16HR11 plugs are built to fit your engine without guesswork. They match the OE number 90919-01275 and come with a ceramic top and a precious center electrode for durability and heat resistance. For everyday driving you’ll notice reliable starts and stable idling; for road trips or heavier use they’re meant to hold up better than worn factory plugs.

Installation is straightforward if you do basic DIY maintenance, and the pack of four covers a full engine service so you don’t have to mix and match brands. I’d recommend them if you want an OEM-style replacement that focuses on compatibility and straightforward performance.

What People Say

People commonly point out the straight OEM compatibility (90919-01275) and build quality—ceramic top and precious center electrode—plus the convenience of a four-pack and a 1-year warranty. Ratings are high (4.8 from 7 reviews), so most buyers find them reliable for Corolla and compatible Toyota/Lexus applications.

Overall Sentiment: Positive

When It Helps

Versatility

Designed for vehicle-specific fit across Toyota, Prius, Lexus and some Nissan models, so it works for both daily driving and occasional heavier use.

Key Benefits

• Exact OE fit for 2009–2018 Toyota Corolla 1.8L (90919-01275)
• Ceramic top for high-temperature resistance
• Precious center electrode for durability
• Pack of four covers a full engine service
• 1-year warranty provides added peace of mind

Rating: 4.8 (total: 7+)

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DENSO Iridium Long Life Spark Plugs (Pack Of 4)

If you want a direct-replacement set that aims to last, these DENSO Iridium Long Life plugs are worth a look. They come as a four-pack, so you can change all cylinders at once and avoid mixing old and new plugs.

You’ll notice crisper starts and a steadier idle compared with worn factory plugs, and the fine 0.4mm iridium center plus the platinum ground strap are designed to keep that spark consistent over time. They’re built to handle higher ignition temperatures thanks to a laser-welded tip and tapered cut, so daily commuting, long highway runs or the occasional spirited drive won’t faze them.

Installation is straightforward if you’re comfortable with basic DIY car work, and the listing points to genuine DENSO OE-style quality—just double-check fitment for your 2015–2016 Corolla 1.8L before you order. I’d recommend them if you want a long-life upgrade that focuses on reliable starts and lasting spark performance.

What People Say

You’ll see buyers highlight the correct fit for 2015–2016 Corolla and note reliable starts and solid build quality. Reviews are uniformly positive, with users confirming the plugs matched their order and performed as expected.

Overall Sentiment: Positive

When It Helps

Versatility

Vehicle-specific fit for Toyota Corolla 2015–2016 1.8L, but the long-life design makes them suitable for everyday commuting, longer trips, and occasional spirited driving.

Key Benefits

• Direct replacement fit for Toyota Corolla 2015–2016 1.8L L4
• 0.4mm iridium center electrode for consistent spark
• 0.7mm platinum ground strap and 360° laser-welded tip for durability
• Pack of four covers a full engine service
• Designed to handle high ignition temperatures for sustained performance

Rating: 5.0 (total: 9+)

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A-Premium Double Iridium Spark Plugs (Pack of 4)

These A-Premium double iridium plugs are the kind of swap you can do yourself on a weekend and actually notice a difference. If your Corolla has the usual symptoms—rough idle, occasional misfires or a choppy throttle response—these plugs are reported to smooth things out and restore a steadier idle. They use iridium on both the tip and core for a focused spark, and the listing recommends long mileage intervals (about 100,000–120,000 miles), so you’re not changing them every season. They fit Corolla 2015–2019 (and several Prius/Lexus/Scion variants), come as a four-pack so you can replace all cylinders at once, and most folks find installation straightforward with basic tools.

If you want a reliable direct-replacement that aims to reduce misfires and improve day-to-day drivability, these are worth considering.

What People Say

Buyers frequently mention these plugs fixed rough idle and misfires on Corollas, improved throttle response and fuel use, and were easy enough to swap in as a DIY job.

Overall Sentiment: Positive

When It Helps

Versatility

Vehicle-specific fit for many 1.8L Toyota engines (Corolla, Prius variants, Lexus CT200h and Scion iM), yet the long-life iridium design suits everyday commuting, highway mileage, and occasional spirited driving.

Key Benefits

• Double iridium center and core for consistent, long-lasting spark
• Direct fit for Toyota Corolla 2015–2019 and several Prius/Lexus/Scion models
• 0.044 in gap, M12 thread and 26.5 mm reach for correct OEM-style fit
• Pack of four lets you replace all cylinders at once to avoid mixing old/new plugs
• Recommended replacement interval around 100,000–120,000 miles for longevity

Rating: 4.7 (total: 59+)

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NGK Laser Iridium Spark Plugs (4 pc)

If you’re keeping a 2015–2019 Corolla running smoothly, these NGK Laser Iridium replacements are an easy, practical swap. They’re listed as OE-equivalent with a 0.044 in gap and come as a four-pack so you can replace all cylinders at once—nice if you don’t want mixed old-and-new plugs. In everyday use you’ll appreciate a reliable spark for smoother idle and consistent starts, and for longer drives the iridium tip is built to last.

Installation is straightforward for a basic DIYer, and because these follow OEM specs you shouldn’t run into fitment surprises. If you want a no-fuss, factory-style replacement that aims to keep your Corolla behaving like it should, these are a solid choice.

What People Say

Buyers highlight that these are direct, OEM-style replacements that fit the 2015–2019 1.8L Corolla and arrive with original packaging and hardware, making a straightforward DIY swap.

Overall Sentiment: Positive

When It Helps

Versatility

Specifically matched to Toyota Corolla 1.8L L4 models from 2015–2019, these plugs offer a factory-style replacement that’s also suitable for routine commuting, occasional spirited drives, and longer highway mileage thanks to the long-life iridium tip.

Key Benefits

• OE-equivalent design with 0.044 in gap for proper ignition
• Pack of four lets you replace all cylinders at once to keep performance even
• Laser iridium tip for long-lived, consistent sparking
• Genuine NGK-style parts and original packaging included
• Direct replacement that matches factory fitment for 1.8L Corolla engines

Rating: 5.0 (total: 4+)

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Champion Iridium Spark Plugs (4 Pc)

If you drive a 2016 Corolla and want a straightforward replacement, these Champion Iridium plugs are an easy choice. They come as a four-pack so you can refresh all cylinders at once, and the 0.044 in gap matches the OE-style spec for the 1.8L engine.

In everyday use you’ll notice consistent starts and a smoother idle after a fresh install, and the iridium tip aims to hold up longer under regular commuting or occasional longer drives. Installation is simple for a basic DIYer and because these follow OEM fitment you shouldn’t have fit surprises. If you want reliable, no-fuss replacements that keep your Corolla behaving like it should, these are worth considering.

What People Say

You’ll see buyers mention the direct fit for 1.8L Corollas, solid performance after install, and that the plugs arrive in original-style packaging—handy if you’re doing the swap yourself.

Overall Sentiment: Positive

When It Helps

Versatility

Matched specifically to Toyota Corolla 1.8L L4 models from 2009–2019 (including 2016), these plugs are suited for everyday commuting, longer drives, and routine DIY tune-ups thanks to their OE-equivalent fit and iridium durability.

Key Benefits

• Compatible OE-style fit for Toyota Corolla 1.8L L4 (2009–2019) with 0.044 in gap
• Pack of four lets you replace all cylinders for even performance
• Iridium core for longer-lasting, consistent sparking
• Built as a direct replacement with original-style packaging and hardware
• Champion brand engineering aimed at reliable ignition and reduced wear

Rating: 4.9 (total: 22+)

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FAQ

Which Spark Plugs Are Best For A 2016 Toyota Corolla?

You should pick plugs that match the OEM specification for your 2016 Corolla (most 1.8L models use a gap around 0.044″ and an OE-style iridium design). Iridium plugs from reputable makers like Denso, NGK or Champion are excellent if you want long life and stable ignition; they tend to reduce misfires and maintain performance over many miles.

A-Premium double iridium options aim to give similar longevity at an aftermarket price point. Copper-core plugs (such as some replacement packs) can work if you prefer a budget option or if your engine originally used copper, but they wear faster and typically need replacing sooner. Before you buy, confirm vehicle compatibility, part numbers and the heat range so you don’t end up with the wrong fit or performance characteristics.

How Do I Install And Maintain Spark Plugs On My Corolla?

You should work on a cool engine and remove one ignition coil or plug wire at a time so you don’t mix up cylinders. Hand-thread each new plug first to avoid cross-threading, then tighten to the manufacturer’s torque spec (check your service manual; a common spec for similar Toyota plugs is about 13 lb·ft / 18 N·m, but verify for your exact plug). Many iridium plugs come pre-coated so you should not add anti-seize unless the plug maker explicitly tells you to; use a small amount of dielectric grease on the inside of the coil boot to aid reassembly and prevent moisture.

Always check the plug gap (confirm it matches the spec), replace all plugs as a set for even wear, and inspect the removed plugs — signs of oil, coolant or heavy carbon can indicate other engine issues you’ll want to address.

Will Upgrading To Iridium Or Double Iridium Improve Performance?

Upgrading to iridium or double iridium can give you a more consistent spark, better cold starts, fewer misfires and often improved throttle response or fuel economy — but the gains are usually modest on a well-maintained stock Corolla. You’ll notice the most benefit if your old plugs are worn, causing rough idle or misfires. Make sure any upgrade is OEM-equivalent in thread, reach and heat range; using the wrong heat range or non-vehicle-specific plugs can cause fouling or pre-ignition.

If you’re unsure, choose OE-equivalent iridium plugs (for example Denso OE-style options) or consult your dealer/mechanic before swapping.

What Buyers Prefer

When choosing between SHUJI SC16HR11, DENSO Iridium Long Life, and A-Premium Double Iridium for your 2016 Corolla, you usually prioritize ignition performance and longevity (iridium or double-iridium designs), OEM fit and reliability, and cost. You’ll pick DENSO if you want proven OEM-level dependability and long service life, A-Premium if you want maximum durability and peak spark performance, and SHUJI if you’re balancing decent performance with a lower price and easier replacement.

Wrapping Up

Pick the plug that matches your priorities: iridium options give the longest life and the most consistent performance, while copper options save you money up front. By choosing the right spark plugs for your Corolla you reduce misfires, improve throttle response and fuel efficiency, and spend less time on unexpected repairs.

If you want the longest service interval and top performance, choose Iridium (NGK or DENSO). If you want solid performance at a lower price, the A‑Premium or SHUJI packs are practical choices. Use the links above to check current prices and confirm fitment for your exact model year and engine before buying.

Product	Image	Rating	Core Material	Thread Size	Item Weight
SC16HR11 90919-01275 Spark Plug for 2009-2018 Toyota Corolla 1.8L Prius Lexus Pack of 4		4.8/5 (7 reviews)	Copper	14mm	5.9 ounces
4 pc DENSO Iridium Long Life Spark Plugs compatible with Toyota Corolla 1.8L L4 2015-2016		5.0/5 (9 reviews)	Platinum	14mm	6.5 ounces
A-Premium Double Iridium Spark Plugs Compatible with Toyota Corolla 2015-2019		4.7/5 (59 reviews)	Iridium	M12 x 1.25 mm	6.4 ounces
4 pc NGK Laser Iridium Spark Plugs compatible with Toyota Corolla 1.8L L4 2015-2019		5.0/5 (4 reviews)	Iridium	14mm	0.81 ounces
4 pc Champion Iridium Spark Plugs compatible with Toyota Corolla 1.8L L4 2009-2019		4.9/5 (22 reviews)	Iridium	0.044 inches	6.4 ounces

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