“Negotiate the road in a classic.”
For 1989, Dodge’s M-body Diplomat sedan was little changed. The base model was dropped, leaving only the mid-range Salon and the higher-end SE.
The powertrain remained the same—an LA 140 bhp 5.2 liter/318 ci V8 with a Carter two-barrel carburetor paired with a TorqueFlite three-speed automatic. With a 3,582-pound shipping weight, 0-60 came in about 12 seconds. Compared to other large rear-wheel-drive sedans, fuel economy was a somewhat uncompetitive 16 city/22 highway by the day’s standards (15/20 by today’s measures). With an 18-gallon gas tank, a Diplomat driver could expect a range of 285 to 305 miles with a 10% fuel reserve.
Standard exterior and mechanical equipment on the $11,995 Diplomat Salon sedan included quad halogen headlights, tinted glass, power-assisted steering, power-assisted front vented disk/rear drum brakes, and P205/75R15 steel-belted radial all-season white sidewall tires (a size still readily available, even as a whitewall) on 15-inch wheels with Deluxe wheel covers. Inside, a cloth/vinyl split-back bench seat with a folding center armrest and adjustable head restraints, tilt steering, a driver’s airbag, intermittent wipers, and an electronically tuned AM stereo/FM stereo with an integral digital clock and four speakers were included.
The $14,795 SE added a full non-padded vinyl roof, Premium wheel covers, all-cloth individually adjustable front seats with dual seatback recliners, a lighted passenger mirror, chrome exterior dual power mirrors, automatic temperature control air conditioning, cruise control, an electrically heated rear window defroster, and the Protection Package. All of this extra equipment made for a 3,782-pound shipping weight—200 pounds more than the Salon.
Packages, Individual Options, & Production Numbers
By 1989, buying a Dodge Diplomat was all about the packages:
- The Popular Equipment Discount Package ($1,141) included Premium wheel covers, automatic temperature control air conditioning, an electrically heated rear window defroster, chrome exterior dual power mirrors, and automatic speed control.
- The SE Luxury Equipment Discount Package ($1,202) included wire wheel covers with locks, a driver’s side power seat, a Luxury leather-wrapped steering wheel, illuminated left and right vanity mirrors, power door locks, power windows, and a power deck lid release. It also included most but not all of the Light Package, including a headlight switch with time delay, a glove box light, a trunk light, and alternator, door ajar, engine oil temperature, and low fuel warning lights.
- The Light Package ($122) included a headlight switch with time delay, a glove box light, and a trunk light. It also included alternator, door ajar, engine oil temperature, and low fuel warning lights.
- The Protection Package ($185) included color-keyed vinyl bodyside moldings, black rear bumper guards, undercoating, and front and rear carpeted floor mats.
Individual options for both Diplomat versions included pearl clear coat paint ($41), power door locks ($201), and power windows ($294). Dodge also proudly offered a Premium electronically tuned AM stereo/FM stereo with up-and-down seek-and-scan and a cassette tape player ($262). The electronic cassette tape player included Dolby B noise reduction, automatic reverse, true fast forward and rewind, an automatic metal tape sensor, and tape program music search.
A full non-padded vinyl roof ($206), chrome exterior dual power mirrors ($164), and automatic temperature control air conditioning ($855) were available for the Salon. A power glass sunroof ($1,108) and a power antenna ($72) were SE-only options. A loaded SE could run to about $17,500—real money in 1989 and about $47,300 in today’s dollars.
Dodge sold a mere 5,709 Diplomats in the 1989 model year, sharply fewer than the 19,173 in 1988, when the base Diplomat was also available.
The View From 2025
The Diplomat was one of the last of Chrysler Corporation’s traditional rear-wheel-drive cars—the final year in a line that extended directly back to the original Diplomat in 1977, and had roots in the mid-1960s with the third-generation Dart. Earlier this year, I blogged about Chrysler Corporation’s Transition To Front-Wheel-Drive.
I’m going to declare these Diplomats as vanished, though I would not have said that a decade ago. They’re gone from the Hemmings Motor News classifieds and eBay Motors. Bring a Trailer has sold three Diplomats in the last five years, two of them sedans.
Make mine the extra-cost Twilight Blue Pearl Coat, please.
Four years ago, I wrote a post about the 1987 Chrysler Fifth Avenue sedan—an M-body sister to the Diplomat. Other rear-wheel-drive Chrysler products I have written about include the 1980 Chrysler Cordoba coupe, the 1980 Plymouth Volaré station wagon, the 1981 Chrysler New Yorker sedan, the 1983 Chrysler Cordoba coupe, and the 1983 Imperial coupe.











