DecodedCars2006 Infiniti Q45
Trims, performance, features, fuel economy, safety and known problems — with the pros and cons against similar 2006 models.
- Class
- Midsize Cars
- Body styles
- 4dr Sport/Premium
- Engines
- 4.5L 8-cyl
- Drivetrain
- Rear-Wheel Drive
- Fuel
- Premium Gasoline
- MPG (best)
- 18 combined · 16 city / 22 hwy
- Length
- 201.6 in
- Curb weight
- 3,845 lb
- NHTSA rating
- Not rated
- Recalls
- 0 campaigns
Pros & cons
What's good
- No recalls so far
Watch out for
- Below-average fuel economyBest version gets 18 MPG combined, 12% below the 2006 midsize car average of 20.5 MPG.
- Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.
Calculated from EPA, NHTSA and vPIC data against 14 similar 2006 models — not a review. How we calculate this →
Overview
The 2006 Infiniti Q45 is a midsize car offered with a 4.5L 8-cyl engine and rear-wheel drive.
It measures about 202 inches long and 72 inches wide on a 113-inch wheelbase, with a curb weight of roughly 3,845 lb.
EPA rates its most efficient version at 18 MPG combined (16 city / 22 highway), 12% worse than the 2006 midsize car average of 20.5 MPG, for an estimated $4,550 a year in fuel.
There are no recalls or owner complaints on file with NHTSA for this model year.
What changed for 2006
No changes to engines, powertrains, drivetrains, size, EPA ratings or NHTSA crash rating compared with the 2005 Q45 — a carry-over year in the data.
Compared with 2005; trim, feature and price changes aren't covered. See the 2005 Q45 →
Dimensions & weight
| Body | Length | Width | Height | Wheelbase | Track F / R | Curb weight | Weight F/R |
|---|---|---|---|---|---|---|---|
| 4dr Sport/Premium | 201.6 in | 72.4 in | 58.7 in | 113 in | 61.8 / 61.4 in | 3,845 lb | 53/47 |
Transport Canada CVS (Open Government Licence – Canada), Canadian-market figures.
Will it fit your garage? Check with your measurements →Engines, MPG & running costs
| Version | Engine | Transmission | Drive | City / Hwy / Comb | vs. class | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|---|---|
| Q45 | 4.5L 8-cyl | Automatic (S5) | Rear-Wheel Drive | 16 / 22 / 18 | -12% | $4,550 | 494 |
| Q45 Sport | 4.5L 8-cyl | Automatic (S5) | Rear-Wheel Drive | 15 / 22 / 18 | -12% | $4,550 | 494 |
EPA estimates; "vs. class" is combined MPG against the 2006 EPA class average. How we calculate this →
Safety ratings & technology
NHTSA has not published 5-Star ratings for the 2006 Infiniti Q45 under the current (2011+) test program.
Similar 2006 midsize cars
| Model | Best MPG / range | NHTSA overall | Recalls |
|---|---|---|---|
| 2006 Infiniti Q45 (this car) | 18 MPG | Not rated | 0 |
| 2006 BMW 5 Series | 21 MPG | Not rated | 3 |
| 2006 Mercedes-Benz E-Class | 27 MPG | Not rated | 0 |
| 2006 Audi A6 | 21 MPG | Not rated | 3 |
| 2006 Lexus LS | 19 MPG | Not rated | 0 |
| 2006 Jaguar XJ | 19 MPG | Not rated | 0 |
| 2006 Maserati Quattroporte | 13 MPG | Not rated | 1 |
Recalls (0)
No vehicle recalls on file with NHTSA for the 2006 Infiniti Q45.
Check your VIN for open recalls at NHTSA ↗Not every 2006 Infiniti Q45 is affected — only a VIN check confirms your car.
Owner-reported problems
No owner complaints for the 2006 Infiniti Q45 in NHTSA's database since 2015.
Used 2006 Infiniti Q45 buyer's checklist
- Run the VIN at nhtsa.gov/recalls. No recalls on file, but check anyway.
- Before you pay: service records, a history report and an independent inspection.
Generated by DecodedCars from NHTSA recalls and owner complaints for the 2006 Infiniti Q45. Not a substitute for a professional inspection.
Other Q45 years
Compare all years →| Year | MPG (best) | Length | Overall | Recalls | Complaints |
|---|---|---|---|---|---|
| 2005 Q45 | 18 | 201.6 in | Not rated | 1 | 1 |
Sources: EPA, NHTSA, Transport Canada, Wikimedia Commons. Not affiliated with NHTSA, the EPA or Infiniti. How we calculate this →