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Infiniti Q45 I 4.5 (278 Hp)
Overall Rating
Infiniti Q45:
The Infiniti Q45 is a full-size luxury sedan that was marketed by the Infiniti division of Nissan from the 1990 to 2006 model years. The inaugural product line and flagship sedan of the brand, the Q45 competed directly against the Acura Legend and Lexus LS 400, as multiple Japanese automobile manufacturers began to establish dedicated luxury-vehicle brands in North America during the late 1980s.
As with the Lexus LS, the Q45 also competed against the BMW 7-Series and Mercedes-Benz S-Class, matching them closely in size. Three generations of the model line were produced. The first generation was developed specifically for Infiniti; a long-wheelbase version with Nissan President was developed from it. The second generation became a rebranded version of the Nissan Cima. The third and final generation was again derived from the Cima, again sharing a platform with the President....(Read more on Wikipedia)
I Overview:
Infiniti Q45 (I). With 396 Nm of torque, it offers ample pulling power. With a weight of 1833 kg, it falls in the mid‑range. Rear‑wheel drive offers dynamic handling and sporty feedback. The top speed reaches 241 km/h. A four-door car with a separate trunk, ideal for families and daily commuting. Seating for 5 makes it ideal for daily use.
The Infiniti Q45 I was produced before modern Euro NCAP testing began. While it featured ABS, its passive safety features reflect early 1990s standards, lacking advanced airbags and structural reinforcements common in contemporary vehicles.
4.5 (278 Hp) Verdict:
Performance Verdict
The 4.5L V8 (VH45DE) engine delivered impressive power and torque for its era, providing smooth, effortless acceleration and strong highway cruising capabilities, making it a true performance luxury sedan.
Fuel Economy
With a combined fuel consumption of 12.4 l/100 km (approx. 19 MPG US), the 4.5L V8 is thirsty by modern standards, but competitive for a large luxury V8 of its time.
Pros and Cons:
Pros:
- • Powerful and smooth 4.5L V8 engine (VH45DE)
- • Distinctive and understated luxury styling
- • Comfortable and spacious interior for long journeys
- • Robust build quality typical of early Japanese luxury cars
Cons:
- • High fuel consumption for a modern driver
- • Aging technology and interior features
- • Potential for expensive maintenance on older luxury components
- • Limited availability of certain parts due to age
Specifications:
| General: | |
|---|---|
| Brand: | Infiniti |
| Model: | Q45 |
| Generation: | I |
| Modification (Engine): | 4.5 (278 Hp) |
| Start of production: | 1989 |
| End of production: | 1996 |
| Powertrain Architecture: | Internal Combustion engine |
| Body type: | Sedan |
| Seats: | 5 |
| Doors: | 4 |
| Engine: | |
|---|---|
| Power: | 278 Hp @ 6000 rpm. |
| Power per litre: | 61.9 Hp/l |
| Torque: | 396 Nm @ 4000 rpm. |
| Engine displacement: | 4494 |
| Number of cylinders: | 8 |
| Engine configuration: | V-engine |
| Number of valves per cylinder: | 4 |
| Fuel injection system: | Multi-port manifold injection |
| Engine aspiration: | Naturally aspirated engine |
| Valvetrain: | DOHC |
| Engine layout: | Front, Longitudinal |
| Cylinder Bore: | 93 mm |
| Piston Stroke: | 82.7 mm |
| Compression ratio: | 10.2:1 |
| Performance: | |
|---|---|
| Fuel Type: | Petrol (Gasoline) |
| Fuel consumption (economy) - combined: | 12.4 l/100 km |
| Maximum speed: | 241 km/h |
| Weight-to-power ratio: | 6.6 kg/Hp, 151.7 Hp/tonne |
| Weight-to-torque ratio: | 4.6 kg/Nm, 216 Nm/tonne |
| Space: | |
|---|---|
| Kerb Weight: | 1833 |
| Trunk (boot) space - minimum: | 271 l |
| Fuel tank capacity: | 85 l |
| Size: | |
|---|---|
| Length: | 5075 mm |
| Width: | 1825 mm |
| Height: | 1435 mm |
| Wheelbase: | 2880 mm |
| Front track: | 1570 mm |
| Rear (Back) track: | 1570 mm |
| Powertrain: | |
|---|---|
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears | 4 |
| Transmission type | Automatic |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 215/65 R16 V |
| Front suspension | Coil spring |
| Rear suspension | Coil spring |
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