Auto Guide
2003 Pontiac Bonneville
Used

Review and specifications

2003 Pontiac Bonneville

Pontiac's top sedan is lively with the available supercharged 3.8-liter V6, though you don't need to opt for this top-level engine to get plenty of power. It was redesigned for 2000 and was significantly improved, with taut handling, a supple ride, and optional stability control. Despite the positives, the Bonneville doesn't possess the refinement of some other cars in its class. The front seats lack support, and the rear bench is too low and soft. The 2004-05 GXP features GM's Northstar V8 engine. Discontinued after the 2005 model year.

Market value
$3,925
Fuel
Conventional
Transmission
Automatic
Seats
6
View listings Find dealers
Model year 2003
Owner rating Not rated
Reliability Not rated
Data updated December 4, 2025

At a glance

Model data

Overview

Powertrain
Conventional
Body style
sedan
Drive type
FWD
Transmission
Automatic, 4-speed
Category
Large cars
Generation began
2000

Pricing

Current retail median
$3,925
Retail value range
$3,350 - $4,275
Original MSRP range
$26,695 - $34,020
Trade-in range
$835 - $1,395

Ratings

Road test score
50/100

Fuel economy

Tested city
12 MPG
Tested highway
33 MPG
Tested overall
20 MPG
Annual fuel cost
$1,970
Cruising range
365 miles

Road tests

0-30 mph
3.2 sec
0-60 mph
8.7 sec
60-0 mph braking
145 ft
Avoidance speed
51 mph
Test status
Test Completed

Dimensions

Length
203 in
Width
74 in
Height
57 in
Wheelbase
112 in
Weight
3,640 lb
Maximum load
935 lb
Towing capacity
1,000 lb

Interior

Seating
6 people
Front head room
2.5 in
Front leg room
40.5 in
Rear head room
2 in
Rear leg room
27 in
Cargo volume
0 cu ft
Luggage
5+2

Brand context

About Pontiac

Once known as GM’s performance brand, Pontiac was discontinued in 2010 along with Hummer, Saab, and Saturn. The legendary GTO of the 1960s and Firebird of the ‘70s, ‘80s, and ‘90s were joined by models such as the Grand Am, Grand Prix, and Bonneville, which were based on other GM models. The Australian-built Pontiac G8 was a legitimate muscle car, and the Vibe hatchback shared its design with the Toyota Corolla Matrix. Today, most Pontiac vehicles still on the road are more than a decade old and lack the safety and convenience features found in modern vehicles.

Vehicle ID: 8670 First published: July 9, 2020 Updated: December 4, 2025

Values may vary by trim, options, location, and market conditions.

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