A 110-horsepower, 2.5-liter 4-cylinder engine was standard in early Luminas. A 135-horsepower, 3.1-liter V6 went into Euro editions, or could be installed in base models. Standard transmission was a 3-speed automatic, but a 4-speed overdrive automatic was optional with the V6. The 3-speed can be found in many V6 Luminas, however. GM's new twin-cam 3.4-liter V6 went into the high-performance Z34 coupe, which arrived during 1991. That engine was rated at 210 horsepower with standard 5-speed manual shift (200 with automatic). Base engines lost 5 horsepower in 1992, but the potent dual-cam 3.4-liter could be installed in Euros (automatic transmission only). A smaller (2.2-liter) 4-cylinder engine went into '93 models, making 110 horsepower; but a year later, all Luminas had V6 engines.