5 Best spark plugs for Ford Focus & Buyer's Guide (2023)
In my 30 years of working as a mechanic, I still have customers that don't know that spark plugs should be diagnosed every 5-6k miles to prevent any bad occasions on road.
Here is a top of the best spark plugs for Ford Focus, in case, you need to change some plugs or upgrade your engine performance.
I recommend:
NGK G-Power
Confirmed quality and performance by customers
Definitely best in this top because of its great performance and long lifespan.
Motorcraft
Original equipment by Ford
The direct OEM replacement that can come in handy, if you need a quick change.
NGK Iridium IX
Performance monster
I would definitely recommend these spark plugs, since I have them on my F-150
Denso
An option for an eco mode
So, I would recommend this item, if you want to get a good product from the pioneering manufacturer that will improve your fuel economy.
Bosch Fusion
Good choice due to price and performance increase
Sure thing, you will get a great performance, but the thing is that will cost you a lot of budget, and moreover this item will serve you only 2 seasons.
Some problems in car operation will require diagnostics and engine repair. But not all complaints will lead to a visit to the car service. If the spark plugs are monitored, some faults are prevented before serious problems occur.
Table of Best spark plugs for Ford Focus
| Name | Our rating | year | durability | heat range | gap | price | Shops |
|---|---|---|---|---|---|---|---|
| NGK G-Power | β
β
β
β
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| 05-18 | 70k miles | 5 | 0.052 | $ | |
| Motorcraft | β
β
β
β
β
| 04-18 | 80-90k miles | - | 0.035 | $$ | |
| NGK Iridium IX | β
β
β
β
β
| 00-04 | 80-90k miles | 5 | 0.052 | $$$ | |
| Denso | β
β
β
β
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| 05-11 | 50-60k miles | 16 | 0.040 | $ | |
| Bosch Fusion | β
β
β
β
β
| 05-09 | 50k miles | 9 | 0.062 | $$ |
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How I decided
Best spark plugs for Ford Focus
NGK G-Power
our-pickThis premium product is known for its excellent performance, which significantly increases fuel efficiency. The 0.052-inch platinum tip of the item provides faster operation, stable and consistent ignition power, lower voltage requirements, and anti-fouling capabilities. It provides high durability and reduces the impact of emissions of gases.
The platinum alloy in the trapezoidal shape and the center electrode provide greater flame reproduction and guarantee an exact period of time for spark plug service. The copper core eliminates extreme heat.
It is supplied with a 60-day guarantee from NGK defects or failures of the manufacturer from the date of purchase.
This high-grade product has a trivalent metal plating with superior anti-grappling and corrosion properties. The three-gasket sealing prevents potential combustion gas leakage, which provides reliable protection for your vehicle.
Special configurations are used in the manufacturing process to eliminate the fluid problem that occurs during the polishing of corrugated ribs on a silicate ceramic insulator. They also significantly improve throttle sensitivity. Compared to conventional spark plugs, this product provides optimum acceleration performance at a very competitive price.
Key features:
- lowers ignition system voltage requirements
- good performance
- increased fuel economy and lower emissions
Product score:
- performance (8/10)
- quality (8/10)
- price (9/10)
TOTAL SCORE: 8.3
- solves misfires
- adjustable gap
- OE
- none
Motorcraft
runner-upIf you've got a stock or slightly modified Ford Focus 2.0 motor and you might be experiencing some bad symptoms with your current spark plugs, if that is the case, it might be time to swap out those Motorcraft spark plugs and do some routine maintenance.
If you have some of those symptoms, it may include, say, misfire, rough start-up, rough idle, plug knocking since they're mostly a two-piece. In addition to that, you might experience a bad fuel economy, a decrease in throttle response, and the list can go on and on.
If that sounds like you, it might be time to swap them out and an OEM plug is definitely a great place to look.
Key features:
- platinum core with an iridium tip
- direct OEM replacement
- increases engine life
Product score:
- performance (7/10)
- quality (8/10)
- price (8/10)
TOTAL SCORE: 7.7
- spark plugs from Ford
- good performance
- resists corrosion and abrasion
- there is a chance that one spark plug from the pack would not be working properly
NGK Iridium IX
premiumNGK Iridium IX spark plugs were designed specifically for the performance enthusiast. It's fine wire center electrode ensures high durability and a consistently stable spark, while the iridium alloy has an extremely high melting point, perfect for your Ford Focus.
The trivalent metal plating of these plugs provides superior anti-corrosion and anti-seizing properties while the corrugated ribs prevent flashover. The ceramic insulator is made of pure alumina silicate, which provides superior strength and better heat transfer.
You will experience smoother run with NGK Iridium IX.
In cases of misfires, this item is the solution to your problem. You'll notice the improvement in idle and it regains lost power as well. Definitely sturdy and durable you can never go wrong with this one.
Key features:
- iridium alloy
- longer insulator nose
- iridium tip
Product score:
- performance (9/10)
- quality (7/10)
- price (6/10)
TOTAL SCORE: 7
- high fuel efficiency and durability
- top performance
- consistently stable spark
- none
Denso
budgetThe Denso spark plugs offer twin tip technology with the 0.040-inch platinum center electrode and 0.040-inch titanium enhanced ground electrode. It has purified alumina powder insulator, which provides exceptional dielectric strength and thermal conductivity allowing the material to stand up to extreme stress.
Also, the copper glass seal bonds the center electrode and insulator together for a gas-tight seal. Besides, it maintains proper heat and excludes hot combustion gases.
On the other hand the use of platinum in spark plug manufacturing to maximize longevity and enhance durability. Moreover, it has platinum which offers superior resistance to erosion and corrosion enabling you to create spark plugs capable of consistent performance
Key features:
- titanium-enhanced alloy ground electrode
- twin-tip technology
- platinum center electrode
Product score:
- performance (7/10)
- quality (7/10)
- price (7/10)
TOTAL SCORE: 7
- faster starts
- improved fuel economy
- enhanced flame propagation for increased engine efficiency
- no performance improvements
Bosch Fusion
best-valueFeaturing an innovative receiving conductor the Bosch Fusion combines the company's patented iridium and platinum center with four equally spaced arms.
This creates a clear path for the electrical current and possibly increase in combustion efficiency. It requires a lower voltage than copper and comes pre-gaped.
However, it is more costly than other platinum models.
Key features:
- fused iridium and platinum center electrode
- four yttrium enhanced ground electrodes
- air gap firing technology
Product score:
- performance (9/10)
- quality (5/10)
- price (6/10)
TOTAL SCORE: 6.6
- increased performance
- better gas mileage
- deals with misfires
- poor lifespan
Best spark plugs for Ford Focus Buying Guide
Tips for maintenance
Sparkle plugs should be cleaned each 6-7k miles. In any case, for the most part, I prescribe to clean them two times per year (before winter and summer).
Flash fittings are not cleaned with a stick, screwdriver, or other sharp items that could harm the encasing candles. The most ideal alternative is a brush made of slim steel wire.
The ideal arrangement is viewed as a compound strategy for cleaning sparkle plugs. Initially, the sparkle plug is degreased with fuel and dried. At that point submerged in a hot fluid arrangement of ammonium acetic acid derivation (20%) and left for 25-30 minutes (the temperature in any event 194 Β°F).
Do compound cleaning in the city or in an all-around ventilated room, as acidic corrosive is discharged when the arrangement is bubbled.