I put a K&N air filter in every car I ...
341127
I put a K&N air filter in every car I buy, this was for my new(ish) Fusion and I have no complaints so far after 10,000 miles.
1938632
Just some background:
I worked in the service department of a car dealership for 2+ years, and this K & N air filter is the best deal you're going to get anywhere! We sold our filters for the same price! Plus installation! And you couldn't reuse them.

With how much thinner this filter is, it allows more airflow, which adds horsepower. I'm not talking anything drastic, but with the right intake system and exhaust system, you could be looking at gains in the 20+ hp area.

Bottom line: super easy installation, hp gains, reusable after cleaning. I'd recommend to all my friends and family!
2996936
Great product. My A/C even flowed stronger after installing the filter. I've been running K&N's for years on every vehicle I buy. They have a lifetime customer.
2123187
I can't say how good it is now, because I got them for the next time I need to clean my new K&N air filter, but it is sitting in my garage when I do need it. My sons vehicle also has a K&N air filter too so this is for him also. If he uses this stuff before me I'll edit this review and say what he thought of it, but until then I'm going by the respected name of the product.
3772827
Over the years the first thing I do after buying a new vehical is replace the factory air filter. I recently bought a new 2013 Ford Focus hatchback. After a few days I notice a hesitation on take off. I was really annoyed because I really like this car but would not put with this nonsense for very long. I went ahead and ordered a new K&N air filter in hopes this would alleviate the problem. I am very pleased to report that this cured the problem. Though not a race car by any means at least now I have a smooth and even take off. Thanks K&N!!
4112318
The K&N air filtration system is the best I have found.  Cleaning is simple and well demonstrated on Utube. Wishing you simply the best, DWofDallas.
2602101
I seen a difference pretty quick I put this in a 2000 olds alero V6. If you need a new air filter buy this and never buy one for that car again
4745273
Very nice. K&n has always been a great product. But i was very impressed with the hard plastic around the filter. This should help with the life for sure. And durability.
2011918
I already had a K&N cold air intake on my car and after 60,000 miles, the filter was due for a cleaning.  But for $30 here on Amazon (cheaper than Ebay)I decide just to get a new filter.  The new filter brought back better air flow and performance only K&N's filters can provide.
2221759
This kit is designed to allow easy cleaning service on K&N air filters. I have used this kit on all 4 of my K&N air filters over the last 20 years with great results.
3995554
First thing I change whenever I get another vehicle. I have these K&N air filters on every vehicle I own. Rather fun disassembling a bunch if stuff to install in my C7 but only took 15 minutes.
1288596
This is the fourth time, that I buy a K&N air filter. In the past i bought one for my '00 Honda Civic, '02 Toyota Rav4, '02 Nissan Pathfinder and now for my 2010 Suzuki Grand Vitara. In each one i feel the same: more power, racing sound and savings in disposable air filter.
Install it in your car and you'll notice the difference.
1758923
I have a K&N air filter and this is exactly what you need to recharge your K&N air filter.  At first glance it seems a little pricey but when you consider you'll get multiple cleanings out of it and with K&N air filters you only need to clean every 10,000 miles, it's well worth the price.  The instructions are very straight forward and easy to follow.
3836231
Put a K&N filter in my Ford Ranger. It lasted 2 weeks before I ordered this filter. With the K&N I saw a a drop in MPGs and the loss disappeared as soon as I went to this filter. Can't beat that.
2276362
2016 Ecoboost Mustang. I have never used a K&N filter before. There is a noticeable difference in driving after switching to this filter. The sound during spooling is way different and there is a slight increase in take off.
3234038
K&N filters are great... but only if you keep them clean and oiled! Othewise, they start letting more particulate into your engine, which isn't nice to your valves. This stuff works as advertised to clean out your filter and re-oil it. Be prepared, however, to let the filter dry for a day or so after cleaning and before oiling and re-inserting.
3973959
Vehicle: 2013 Ford Fusion Hybrid

Awesome. KN are the best filters for any car. Would recommend and buy again. Increased performance.