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525i...What does the i Mean?

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Old 01-16-2009, 02:36 PM
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what does it mean and what does it do?
Old 01-16-2009, 02:42 PM
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Originally Posted by hostelo' post='769853' date='Jan 16 2009, 05:36 PM
what does it mean and what does it do?
I thought it originally stood for "in-line" since BMW 4 and 6 cylinder engines were configured that way. Then you get into the V8s, so I'm not sure.
Old 01-16-2009, 02:51 PM
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injected........................................ maybe
Old 01-16-2009, 02:53 PM
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Nope.

i = Injection for fuel injected motors. All diesels are "d" to differentiate them.
Old 01-16-2009, 02:56 PM
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so why do some dont have an i or d?
Old 01-16-2009, 02:56 PM
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here's a link from wikipedia explaining the letters

http://en.wikipedia.org/wiki/Bmw#Nomenclature
Old 01-16-2009, 02:56 PM
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i = INCREDIBLE!! Nah, actually does mean injected....the INCREDIBLE is just implied!!
Old 01-16-2009, 02:59 PM
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Originally Posted by flyingpuck' post='769869' date='Jan 17 2009, 01:56 AM
i = INCREDIBLE!! Nah, actually does mean injected....the INCREDIBLE is just implied!!
and what does d mean?
dramatic maybe? :S
Old 01-16-2009, 03:00 PM
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Originally Posted by CWS530' post='769856' date='Jan 17 2009, 12:42 AM
I thought it originally stood for "in-line" since BMW 4 and 6 cylinder engines were configured that way. Then you get into the V8s, so I'm not sure.
Nope, the "i" stands for injection like the "e" for Mercedes Benz it is just in German "einspritzt". 36 years ago when the 5 series was launched with the e12 model there were only two versions. The 520 115HP (carburetor) and the 520i 130HP (electronic fuel injection) both were 4 cylinder in line. I was a child and I remember that it was quite rare to see a car with injection at that time. Same was the MB it was the 200 and the 200E.

525i...What does the i Mean?-bmw_520_e12.jpg
Old 01-16-2009, 03:03 PM
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My guess is if "I" is for gasoline cars and "d" is for diesel, maybe "i" means internal combustion engine.



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