The 2004 base-model Porsche Boxster was equipped with a 2.7-liter horizontally opposed (or boxer-style) six-cylinder engine that produced 228 horsepower. It was linked to a five-speed manual overdrive transmission, which was standard. A five-speed automatic transmission, with a gate for manual shifting, was optional.
Standard features for the Porsche Boxster included air conditioning, power windows, power door locks, dual front and side airbags, leather seats, power heated mirrors, a keyless entry system, a power-adjustable driver's seat, a leather-trimmed steering wheel, and an AM/FM stereo system with an in-dash CD player.
The Boxster also came with a rear spoiler, four-wheel anti-lock brakes, and a power convertible top.
One of the few upgrades for 2004 was the addition of a sports exhaust system to the list of options.
Drivers thought the Boxster flew the Porsche flag well, even though it was the automaker's entry-level vehicle. They praised its quickness, handling, reliability, suspension, and even its stereo system. Though most Boxster drivers found little to complain about, some would have liked to have had a little more legroom and storage space.