Customer Reviews

Bosch (4501) FGR8DQI Platinum IR Fusion Spark Plug, Pack of 1

5 star:		(22)
4 star:		(2)
3 star:		(2)
2 star:		(2)
1 star:		(6)

 

 

I have two Toyota Camrys. A 2004 SE and 2006 LE. Both have the same 4 cylinder engine. I have always been religious about checking the gas mileage on my cars at every fill up because this relays to me if anything has gone awry. The '04 had 115,000 miles and the '06 had 45,000 when I replaced the plugs. I replaced them mainly to see if it would help the fuel mileage; unfortunately for me, no difference. I'm sure they are good plugs as Bosch is well known for their high quality, however next time I will probably replace using the factory spark plugs.

I muat admit. I never did a tuneup on my 2002 Camry, I'm ashamed to say. time just got away from me. Then I noticed I was going to the pump far more often than I should. That forced me to think about a tuneup and replacing my plugs. Fortunately, I thought to spend the extra few dollars over the champions. No disrespect to them, but I just figured I'd put in the best since I was spending so much at the pump.

I put the these Bosch's in and boy oh boy!! I just had to check my consumption. I was averaging 32mpg after this tuneup procedure.

i'm satisfied. Never saw this type design before. Awesome!! worth every penny.

Six month ago I popped these in my vehicle and the car continues to run smoothly and like new. I can't say that they increase performance in a noticeable manner, but I can say they didn't decrease performance. I'm happy overall.

i placed this spark plug in my 2002 misubishi lancer and increased its MPG from 29.5-34 MPG and thats about 4.5 MPG increased. highly recommended product.

Bought these hoping for better fuel efficiency. After much hyperbole, concluded that the really old spark plugs I was using delivered better milage regapped than these! What's that all about?

Car: 1992 Nissan Sentra

I know the first thing you will think is: you put them in the wrong car. Well, not according to Bosch. They worked, just fine. I just got the same or worse mileage when doing so.

Although Lexus told me using their plugs, would stop my spark knock (which they didn't). The Bosch Platinum IR Fusion Spark Plug did the trick. Now my spark knock was upon take off from a dead stop and only lasted about a second. Do not know if these will help you if you constant spark knock (think you have larger problem).

3days and 350 miles on these and the VR6 Jetta has new life.Runing strong, full o pep.Code 411 has not returned after clearing code with new plugs. Have not studied mileage yet, but looking to increase for sure.
Expensive yes, but great peace of mind in having these.

These have been running strong now for 30,000 miles. They start the car 1-crank faster and have not given me any trouble. Fuel economy is what it should be as well.

I will purchase these again when they are worn. Finally, a good spark plug from Bosch!

-- Update --
It's now been a few more years and I've accumulated 60,000 on the plugs with no issues whatsoever. The mileage has been great, fuel economy is normal, and car still cranks quickly. I am replacing them as a regular tune-up only. These are so good that I'm buying them again!

I bought these as replacement plugs for my Jaguar. I get a better response and I am getting 2 to 4 miles more per gallon. I strongly recommend these plugs over the stock ones.

The price was right. I've always had good luck with Bosch, particularly their automotive parts. I'm not sure of it was the new plugs or the oil change I did at the same time, but I did notice a slight increase (~3 MPG) in fuel economy in my Scion xA. Would buy again, especially at this price.