I own a 2007 Jaguar X-Type 4 door sedan. It has the 3.0L 6 cylinder engine. It requires Premium fuel.
I was wondering how difficult it would be to convert / retrofit the engine to run a lower octane fuel, or even E85. I live in Michigan and E85 is the least expensive fuel, Premium is the most expensive.
You will NEVER EVER recover the conversion cost. Sell the Jaguar and buy a Hyundai.
It's possible but expensive, you have to change the compression (Pistons) & or the cylinder head cc combustion chamber volume to use lower octain fuel. Most cars hi-comp cars like this can get by on 89 octain. I use it in my turbo Fiat & Mini. It's good to use fuel injection cleaner once & awhile.
It might be cheaper to move to a state like Kentucky or Tennessee where the 90+ octain gas is under $3.00/gal.
FYI: esencetully the newer Jaguars like yours are a Ford Taurus .
Try a patented product called Bestline -you will be blown away!
Looking for a Used X-TYPE in your area?
CarGurus has 530 nationwide X-TYPE listings starting at $1,999.
Search Jaguar X-TYPE Questions
Jaguar X-TYPE Experts