Page "Toyota Matrix" Paragraph 13
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The pièce de résistance, however, was Toyota's high-tech 2ZZ-GE engine – the Matrix's namesake because of the metal matrix composite ( MMC ) used to line the cylinder walls.
While its 11. 5: 1 compression ratio was a large factor in its performance, what set the engine apart was its ability to alter timing and valve lift through Toyota's VVTL-i.
Despite the technology, however, the engine's high compression necessitates " premium " gasoline ( 91 octane or above in the ( R + M )/ 2 scale ).
With the exception of an available automatic in 2003, a six-speed manual transmission has been the only option for the XRS.
A Transitional Low Emission Vehicle ( TLEV ) its first year of production, the 2ZZ was retrofitted in 2004 with a smog pump and reclassified as an Ultra Low Emission Vehicle ( ULEV ).
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