body color on Nitro R/T (photo) or chrome on the Nitro and SLT.
8th February 2006.
The 2007 Dodge Nitro
will be available in three models:
- Nitro (base),
- Nitro SLT,
- Nitro R/T.
Two V6 engine options will be available at first, before
the addition of a diesel option for some markets (especially Europe).
Transmissions will be three: the base Nitro comes with a standard six-speed
manual or optional four-speed automatic. Nitro SLT gets a standard four-speed
automatic while the Nitro R/T features a standard five-speed automatic.
All three U.S. models offer 4x2 (rear-wheel-drive) and 4x4
capability. For sportier handling, a new performance suspension is standard on
the Dodge Nitro R/T
and is an available option on the Nitro SLT.
3.7-liter SOHC V-6 - Standard on the Nitro (base)
and Nitro SLT models, the 3.7-liter SOHC V-6 engine (90°, cast iron block,
aluminium head, 2-valve per cylinder) produces 210 hp (157 kW) @ 5,200 rpm and
235 lb.-ft. (319 Nm) @ 4,000 rpm.
Bore and stroke are 93.0 and 90.8 mm respectively (3700
cc), with a 9.6:1 compression ratio.
Specific output is a modest 56.75 hp per litre, with a
similarly modest specific torque figure of 86.2 Nm per litre.
Chrysler says that refinements in the valve train and
combustion chamber enhance low-speed torque while providing a smooth idle and
minimal engine noise. An Electronic Throttle Control (ETC) system tailors
throttle response to pedal movement based on operating conditions, and
maintains a consistent vehicle speed on rolling grades when cruise control is
Preliminary fuel consumption (manual) is estimated
at 18 U.S. mpg city (13.07 litres / 100 km), which allows for a theoretical
351 miles / 566 km autonomy with the 19.5 U.S. gal / 74-litre fuel tank, and
23 mpg on highway (10.23 l/100 km) with 449 miles / 723 km autonomy.
4.0-liter SOHC V-6 - The 4.0-liter SOHC V-6 (60°,
all-aluminium, 4-valve per cylinder) is standard on the Nitro R/T model. It
delivers 255 hp (190 kW) @ 5,800 rpm and 275 lb.-ft. torque (360 Nm) @ 4,000
rpm. It is an enhanced version of the 3.5-liter engine used in prior Chrysler
Group vehicles. The engine provides more power and torque than the prior
3.5-liter with emphasis on low- and mid-range operation to meet the needs of
the day-to-day driver.
V6 engines at first, before the diesel joins in some markets.
Bore and stroke are 96 and 91 mm respectively (3952 cc),
with a 10.3:1 compression ratio.
Specific output is better here, with 64.52 hp per litre (or
1000 cc), and specific torque is at 91.1 Nm per litre.
Preliminary fuel consumption (automatic) is
estimated at 17 U.S. mpg city (13.84 litres / 100 km), which allows for a
theoretical 331 miles / 534 km autonomy with the 19.5 U.S. gal / 74-litre fuel
tank, and 21 mpg on highway (11.20 l/100 km) with 410 miles / 660 km autonomy.
For key markets outside North America (mainly Europe), the
Dodge Nitro will be offered next year with a diesel engine.
Suspension - The Dodge Nitro features all-new
independent front and five-link rear suspension.
The independent front suspension comes with upper and lower
"A" arms, coil springs, low pressure gas-charged shock absorbers and
The five-link rear suspension, includes a live axle, upper
and lower trailing arms, track bar, coil springs, stabilizer bar, low-pressure
gas-charged shock absorbers.
SLT with automatic transmission and (middle) navigation system.
Performance-oriented drivers can order the new optional
performance suspension available for the Nitro R/T and SLT models. Emphasis
becomes on responsive, fun-to-drive handling accompanied by a firm ride. This
system features a revised sway bar, springs, shocks, bushings and 20-inch
tires and wheels for improved cornering and increased traction.
Steering - Effort, feel and response on the Nitro’s
power assisted rack-and-pinion steering system is tuned to give precise
control and positive feedback from the steering force exerted by the tires.
The steering linkage design allows for a tighter turning circle, with a
turning diameter (curb-to-curb) of 11.1m. Overall ratio is 17.36:1 with 3.42
steering turns (lock-to-lock).
Transmissions - The six-speed manual
transmission is standard on the Dodge Nitro 4x2 and 4x4 models with the
3.7-liter V-6 engine. For smooth operation, first and second gears have
triple-cone synchronization, the third and fourth gears feature double-cone
and the fifth and sixth gears single-cone synchronization. The two-piece
aluminium case with integrated clutch housing assures powertrain stiffness and
low weight. The new first-gear ratios combined with six-speed step spread
allows optimization of axle ratios for fuel economy and performance.
Transmission ratios for the six-speed manual are:
- 1st: 4.46
- 2nd: 2.61
- 3rd: 1.72
- 4th: 1.25
- 5th: 1.0
- 6th: 0.84
- Reverse: 4.06
The four-speed automatic transmission is optional on
the Dodge Nitro and standard on the Nitro SLT. Line pressure within the
transmission is based on demand for improved fuel efficiency.
Transmission ratios for the four-speed automatic are:
- 1st: 2.84
- 2nd: 1.57
- 3rd: 1.0
- 4th: 0.69
- Reverse: 2.21
The five-speed automatic transmission is mated to
the 4.0-liter V-6 engine. It features Electronic Range Select (ERS) driver
interactive shift control. The shifter provides fully-automated shifting when
in the Drive position, or the driver can manually select each gear by simply
moving the shifter left and right from the Drive position.
Transmission ratios for the five-speed automatic are:
- 1st: 3.59
- 2nd: 2.19
- 3rd: 1.41
- 4th: 1.0
- 5th: 0.83
- Reverse: 3.16
Drive systems- Nitro
4x4 versions feature a:
- standard part-time four-wheel drive system with the
manual transmission (50/50 torque split between front and rear axle), or
- a full-time all-wheel drive system with automatic transmissions (48/52
torque split between front and rear axle).
With the part-time four-wheel drive system (with the manual
transmission), two-wheel drive and all-wheel drive modes are electronically
controlled by a switch in the center console which can be selected at any
The full-time all-wheel
drive system (with automatic transmissions)
does not have a 2WD mode and has no console switch.
Brakes - Four-wheel disc anti-lock brakes 9ABS) are
standard on all Nitro versions, with larger rotors for better stopping and
Front rotors have inverted hat construction (vent openings
are on the outboard side of the rotor) to improve cooling compared to
conventional inboard venting. This also helps to minimize high-temperature
deformation for long-term smooth operation.
A Brake Traction Control System (BTCS) is standard on the
Nitro. BTCS transfers torque from one wheel to another on the same axle when
wheel slip conditions are detected.
Also standard on the Dodge Nitro is the Electronic
Stability Program (ESP) which aids the driver in maintaining vehicle
directional stability in severe driving manoeuvres on any type of surface.
Using signals from sensors throughout the vehicle, ESP determines the
appropriate brake and throttle adjustments for directional stability of the
For more information: General,