The 1990 Jeep Grand Wagoneer Was the Last Production SUV Without an ECU - and Here’s What They Cost in 2026

Every car sold in the U.S. today is packed with computers, but that wasn’t always the case. The last production car sold new in America without any sort of computer was the 1990 Jeep Grand Wagoneer. It used a carbureted 5.9-liter V8 and relied only on an ignition module to send spark to the plugs, no ECU.

The Grand Wagoneer first arrived in 1963, when Jeep was owned by Kaiser Motors. It was designed as a truck-based station wagon that combined the practicality of a wagon with the ruggedness of a pickup. Its platform dated back to 1963 and was based on the Jeep J-Series Gladiator.

Ownership later passed to AMC and then Chrysler, which kept the model going because sales remained steady and it stayed profitable.

For the 1990 model year, Chrysler made only minor updates: a new air conditioning compressor, improved build quality, and better exterior finishing. 9-liter V8, paired with a three-speed automatic transmission. Four-wheel drive was standard. Inside, the Grand Wagoneer featured a wood-effect dashboard, a front bench seat with folding armrest, an overhead console borrowed from Chrysler minivans, remote keyless entry, and central locking.

Prices vary by condition and mileage. Average examples generally sell for $30,000 to $35,000. Daily drivers and high-mileage models tend to trade between $20,000 and $25,000, while well-preserved originals with under 100,000 miles usually fetch $40,000 to $60,000. At the top of the market, low-mileage survivors, restored examples, and restomods often surpass $80,000, with pristine cars occasionally breaking six figures at major auctions.