The 2006 Infiniti Q45, the latest model year on record, is 201.6″ long, 72.4″ wide and 58.7″ tall on a 113″ wheelbase, and weighs 3,845 lb. At 16.8 ft it fits a standard garage and leaves 1.2 ft spare in an 18-foot street space.
Every Infiniti Q45 generation, measured
The biggest change in weight came in 2002: 81 lb lighter than before.
| Generation | Length | Width | Height | Wheelbase | Curb weight |
|---|---|---|---|---|---|
| 1990–1996 | 200″ | 72″ | 56.3″ | 113.4″ | — |
| 1997–2001 | 199.2″ | 71.7″ | 57.1″ | 111.4″ | 3,882 lb |
| 2002–2006 | 199.6″ | 72.4″ | 57.1″ | 113″ | 3,801 lb |
Q45 year by year
| Model year | Length | Width | Wheelbase | Curb weight | Body styles |
|---|---|---|---|---|---|
| 2006 | 201.6″ | 72.4″ | 113″ | 1 | |
| 2005 | 201.6″ | 72.4″ | 113″ | 1 | |
| 2004 | 199.6″ | 72.4″ | 113″ | 1 | |
| 2003 | 199.6″ | 72.4″ | 113″ | 1 | |
| 2002 | 199.6″ | 72.4″ | 113″ | 1 | |
| 2001 | 199.6″ | 71.7″ | 111.4″ | 1 | |
| 2000 | 199.2″ | 71.7″ | 111.4″ | 1 | |
| 1999 | 199.2″ | 71.7″ | 111.4″ | 1 | |
| 1998 | 199.2″ | 71.7″ | 111.4″ | 1 | |
| 1997 | 199.2″ | 71.7″ | 111.4″ | 1 | |
| 1996 | 200″ | 72″ | 113.4″ | 1 | |
| 1995 | 200″ | 72″ | 113.4″ | 1 | |
| 1994 | 200″ | 72″ | 113.4″ | 1 | |
| 1993 | 200″ | 72″ | 113.4″ | 1 | |
| 1992 | 200″ | 72″ | 113.4″ | 1 | |
| 1991 | 200″ | 72″ | 113.4″ | 1 | |
| 1990 | 200″ | 72″ | 113.4″ | 1 |
Will a Q45 fit
| Space | Typical size | This car | Verdict |
|---|---|---|---|
| Single garage | 20 ft deep | 16.8 ft | Fits, with room to open the door |
| Street parking space | 18 ft | 16.8 ft | Fits comfortably |
| Standard parking bay width | 8.5 ft wide | 6 ft | Room to open doors both sides |
Against cars of the same length
| Measure | This car | Typical of 670 cars within 10″ of its length | Difference |
|---|---|---|---|
| Width | 72.4″ | 74.8″ | −2.4″ |
| Wheelbase | 113″ | 116.1″ | −3.1″ |
| Curb weight | 3,845 lb | 4,273 lb | −428 lb |
Q45 against its rivals
Next to the Chevrolet Monte Carlo, Buick Century and Cadillac Seville, the Q45 is the longest and the narrowest of the four.
| Model | Model year | Length | Width | Curb weight |
|---|---|---|---|---|
| Infiniti Q45 (this car) | 2006 | 201.6″ | 72.4″ | 3,845 lb |
| Chevrolet Monte Carlo | 2007 | 196.9″ | 72.8″ | 3,433 lb |
| Buick Century | 2005 | 194.5″ | 72.8″ | 3,369 lb |
| Cadillac Seville | 2004 | 201.2″ | 74.8″ | 4,010 lb |
Specs vary by trim. Yours decodes from the VIN.
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Frequently asked questions
Is the 2006 Q45 bigger than the 2005?
No. The 2006 and 2005 Q45 are the same size and weight.
Which Q45 years share the same body?
By our measurements the body changed in 1997 and 2002. Model years inside each range, such as 2002–2006, share the same dimensions; the boundaries are estimated from changes in size.
Which is bigger, the Q45 or the Chevrolet Monte Carlo?
The 2007 Chevrolet Monte Carlo is 4.7″ shorter and 412 lb lighter than the 2006 Q45.
How much does a used Q45 cost?
In our listings collected since June 2026, the average asking price runs from $4,043 for the 1997–2001 car to $3,949 for the 2002–2006 one, across 18 listings.
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