← Cadillac SRX · 2004-2009 · Sigma

Cadillac SRX 1st Gen (2004-2009)

Sigma RWD/AWD with optional Northstar V8. Tall wagon proportions. Cult enthusiast pick.

Verdict
C
BHP
255-320 bhp
0–60
6.7 s
Top speed
140 mph
MPG
16.0 mpg
Used
$5,000-$13,000

First Cadillac SUV after the Escalade. Sigma RWD platform shared with first-gen CTS. Engines: 3.6L LY7 V6 NA (255 hp) base; Northstar L47 4.6L V8 NA (320 hp / 315 lb-ft) optional. Five-speed automatic on most years (six-speed late). RWD with AWD optional. Third-row seating optional (rare in this era). Magnetic Ride Control optional. Bose 5.1 audio. The first-gen SRX was effectively a tall wagon with SUV pretensions — proportions and dynamics closer to a luxury wagon than to a body-on-frame SUV, which made it a divisive proposition in 2004 but is more interesting in retrospect. The Northstar V8 option is the cult spec for enthusiast buyers. Production at Lansing Grand River.

Strengths

  • RWD platform (sportier than later SRXs)
  • Northstar V8 option (320 hp)
  • Magnetic Ride Control optional
  • Cheap depreciation-bombed used cars
  • Tall wagon proportions are good-looking now

Weaknesses

  • Northstar head gasket failures (the V8 issue)
  • Third-row seating (when fitted) is tight
  • Five-speed automatic dated
  • Cabin tech now 20+ years old
  • Resale weak versus rivals

Notable tech

  • Sigma RWD platform
  • Northstar 4.6L V8 NA optional
  • Magnetic Ride Control optional
  • Bose 5.1 audio
  • Third-row seating optional

Common issues

  • Northstar head gasket failures
  • Magnetic damper actuator failures
  • ECU climate control faults
  • Power steering pump leaks
  • Air suspension air-spring leaks (rear, when optioned)

Used-market budget

$8,000

V6 cars $5-9k. V8 cars $7-13k. Documented Northstar cooling system service is critical for V8 examples.