Car comparison

Lexus IS II (XE20) 250 V6vsAlfa Romeo 159 2.4 JTDM 20V

Compare specs, acceleration, fuel consumption, dimensions, practicality, and estimated running costs side by side.

New comparison

Lexus IS II (XE20)

250 V6

208 hp2500 ccGasolineRWDManualNaturally aspiratedSedan2005-2008

Alfa Romeo 159

2.4 JTDM 20V

210 hp2387 ccDieselAWDManualTurbochargedSedan2007-2009

Comparison overview

Use the estimates as comparison hints and verify exact figures before making decisions.

Alfa Romeo 159 2.4 JTDM 20V

Most powerful
210 hp
157 kW
Highest torque
400 Nm
295 lb-ft
Best power-to-weight
128 hp/t
95 kW/t
7.8 kg/hp
Lowest combined fuel consumption
7.2 L/100 km
32.7 mpg US
39.2 mpg UK
Lowest city consumption
9.7 L/100 km
24.2 mpg US
29.1 mpg UK
Lowest highway consumption
5.8 L/100 km
40.6 mpg US
48.7 mpg UK
Best estimated range
972 km
604 mi
Largest trunk
405 L
Best overall score
57/100
Best performance score
50/100
Best economy score
87/100
Best practicality score
71/100

Lexus IS II (XE20) 250 V6

Quickest 0-100 km/h
8.1 s
Fastest top speed
240 km/h
149 mph Unrestricted
230 km/h
143 mph Restricted
Lightest
1,635 kg
3,605 lb

Specification comparison

Specification comparison
Model	LexusIS II (XE20)250 V6	Alfa Romeo1592.4 JTDM 20V
Power	208hp155kW	210hp157kW
Torque	252Nm186lb-ft	400Nm295lb-ft
Curb weight	1,635kg3,605lb	1,645kg3,627lb
Gross weight	2,055kg4,530lb	2,195kg4,839lb
Top speed	Unrestricted 240 km/h149 mph Restricted 230 km/h143 mph Calculated	227 km/h 141 mph
To 99% top speed	75.9s99% target: 238 km/h / 148 mph Calculated	73.6s99% target: 225 km/h / 140 mph Calculated
0-100 km/h	8.1s	8.3s
0-200 km/h	28.4s Calculated	32.6s Calculated
0-60 mph	7.7s Calculated	7.9s Calculated
Fuel consumption	9.8L/100 km24mpg US28.8mpg UK	7.2L/100 km32.7mpg US39.2mpg UK
Fuel consumption city	13.5L/100 km17.4mpg US20.9mpg UK	9.7L/100 km24.2mpg US29.1mpg UK
Fuel consumption highway	7.7L/100 km30.5mpg US36.7mpg UK	5.8L/100 km40.6mpg US48.7mpg UK
Quarter mile	15.8s Calculated	16.0s Calculated
Power-to-weight	127hp/t95kW/t58hp/1000 lb Calculated	128hp/t95kW/t58hp/1000 lb Calculated
Torque-to-weight	154Nm/t103lb-ft/ton Calculated	243Nm/t163lb-ft/ton Calculated
Estimated range	663km412mi Calculated	972km604mi Calculated
Displacement	2,500cc153cu in	2,387cc146cu in
Length	4,575mm180in	4,660mm183in
Width	1,800mm71in	1,828mm72in
Height	1,440mm57in	1,422mm56in
Wheelbase	2,730mm107in	2,700mm106in
Front track	1,535mm60in	1,578mm62in
Rear track	1,545mm61in	1,555mm61in
Ground clearance	145mm6in	-
Trunk volume	378L	405L
Doors	4	4
Seats	5	5
Fuel tank	65L	70L
CO2 emissions	-	192g/km

Performance charts

Use the estimates as comparison hints and verify exact figures before making decisions.

Dyno simulation

Estimated stock-style power and torque curves by engine speed.

Lexus IS II (XE20) 250 V6Alfa Romeo 159 2.4 JTDM 20VPowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
LexusIS II (XE20)250 V6	6,400 rpm	4,800 rpm	6,650 rpm
Alfa Romeo1592.4 JTDM 20V	4,000 rpm	1,500 rpm	4,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	LexusIS II (XE20)250 V6	Alfa Romeo1592.4 JTDM 20V
	Acceleration checkpoints
0-60 mph 0-97 km/h	7.7 s	7.9 s
0-100 km/h 0-62 mph	8.1 s	8.3 s
0-200 km/h 0-124 mph	28.4 s	32.6 s
Top speed	Unrestricted 240 km/h149 mph Restricted 230 km/h143 mph Limited	227 km/h 141 mph
	Drag race simulation
60 ft 18 m	2.9 s	2.9 s
330 ft 101 m	7.2 s	7.2 s
1/8 mile 201 m	10.6 s	10.7 s
1000 ft 305 m	13.4 s	13.6 s
1/4 mile 402 m	15.8 s	16.0 s
Trap speed 1/4 mile 402 m	154 km/h 96 mph	150 km/h 93 mph

Power comparison

Bar comparison chart for Power. Higher is better · hp / kW

Chart data table
Vehicle	Value
LexusIS II (XE20)250 V6	208 hp 155 kW
Alfa Romeo1592.4 JTDM 20V	210 hp 157 kW

Alfa Romeo 159 2.4 JTDM 20V has 2 hp more than Lexus IS II (XE20) 250 V6.

The biggest power difference is between Lexus IS II (XE20) 250 V6 and Alfa Romeo 159 2.4 JTDM 20V: 2 hp (1 kW).

Torque comparison

Bar comparison chart for Torque. Higher is better · Nm / lb-ft

Chart data table
Vehicle	Value
LexusIS II (XE20)250 V6	252 Nm 186 lb-ft
Alfa Romeo1592.4 JTDM 20V	400 Nm 295 lb-ft

Curb weight comparison

Bar comparison chart for Curb weight. Lower is better · kg / lb

Chart data table
Vehicle	Value
LexusIS II (XE20)250 V6	1,635 kg 3,605 lb
Alfa Romeo1592.4 JTDM 20V	1,645 kg 3,627 lb

Top speed without limiter comparison

Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph

Chart data table
Vehicle	Value
LexusIS II (XE20)250 V6	Unrestricted 240 km/h149 mph Restricted 230 km/h143 mph
Alfa Romeo1592.4 JTDM 20V	227 km/h 141 mph

0-100 km/h comparison

Bar comparison chart for 0-100 km/h. Lower is better · seconds

Chart data table
Vehicle	Value
LexusIS II (XE20)250 V6	8.1 s
Alfa Romeo1592.4 JTDM 20V	8.3 s

Although Alfa Romeo 159 2.4 JTDM 20V has more power, Lexus IS II (XE20) 250 V6 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Lexus IS II (XE20) 250 V6 and Alfa Romeo 159 2.4 JTDM 20V: 0.2 s.

Fuel consumption comparison

Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK

Chart data table
Vehicle	Value
LexusIS II (XE20)250 V6	9.8 L/100 km 24.0 mpg US 28.8 mpg UK
Alfa Romeo1592.4 JTDM 20V	7.2 L/100 km 32.7 mpg US 39.2 mpg UK

The biggest fuel consumption difference is between Alfa Romeo 159 2.4 JTDM 20V and Lexus IS II (XE20) 250 V6: 2.6 L/100 km.

Power-to-weight comparison

Bar comparison chart for Power-to-weight. Higher is better · hp/t / kW/t

Chart data table
Vehicle	Value
LexusIS II (XE20)250 V6	127 hp/t 95 kW/t 7.9 kg/hp
Alfa Romeo1592.4 JTDM 20V	128 hp/t 95 kW/t 7.8 kg/hp

Estimated range comparison

Bar comparison chart for Estimated range. Higher is better · km / mi

Chart data table
Vehicle	Value
LexusIS II (XE20)250 V6	663 km 412 mi
Alfa Romeo1592.4 JTDM 20V	972 km 604 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
LexusIS II (XE20)250 V6	208 hp 155 kW	8.1 s	Unrestricted 240 km/h149 mph Restricted 230 km/h143 mph
Alfa Romeo1592.4 JTDM 20V	210 hp 157 kW	8.3 s	227 km/h 141 mph

Most attractive quadrant

Scatter chart with performance score on the X axis and practicality score on the Y axis.

Vehicle

Performance score

Practicality score

LexusIS II (XE20)250 V6

Power	208 hp 155 kW
0-100 km/h	8.1 s
Top speed Unrestricted 240 km/h149 mph Restricted 230 km/h143 mph

Doors/seats	4 doors 5 seats
Trunk	378 L 13.3 cu ft
Length	4,575 mm 180.1 in
Height	1,440 mm 56.7 in

Alfa Romeo1592.4 JTDM 20V

Power	210 hp 157 kW
0-100 km/h	8.3 s
Top speed 227 km/h 141 mph

Doors/seats	4 doors 5 seats
Trunk	405 L 14.3 cu ft
Length	4,660 mm 183.5 in
Height	1,422 mm 56.0 in

Performance vs fuel economy

Cars closer to the top-right corner combine stronger performance with better fuel economy scores.

Vehicle

Performance score

Fuel economy score

LexusIS II (XE20)250 V6

Power	208 hp 155 kW
0-100 km/h	8.1 s
Top speed Unrestricted 240 km/h149 mph Restricted 230 km/h143 mph

9.8 L/100 km

24.0 mpg US

28.8 mpg UK

Alfa Romeo1592.4 JTDM 20V

Power	210 hp 157 kW
0-100 km/h	8.3 s
Top speed 227 km/h 141 mph

7.2 L/100 km

32.7 mpg US

39.2 mpg UK

Alfa Romeo 159 2.4 JTDM 20V is closest to the top-right balance target for performance and fuel economy.

Acceleration vs fuel consumption

Cars closer to the lower-left corner offer a better mix of quick acceleration and low fuel consumption.

Acceleration vs fuel consumption data table
Vehicle	Fuel consumption, L/100 km	0-100 km/h, s
LexusIS II (XE20)250 V6	9.8 L/100 km 24.0 mpg US 28.8 mpg UK	8.1 s
Alfa Romeo1592.4 JTDM 20V	7.2 L/100 km 32.7 mpg US 39.2 mpg UK	8.3 s

Power-to-weight vs fuel consumption

The shaded area favors higher power-to-weight with lower combined fuel consumption.

Power-to-weight vs fuel consumption data table
Vehicle	Power-to-weight, hp/t	Fuel consumption, L/100 km
LexusIS II (XE20)250 V6	127 hp/t 95 kW/t 7.9 kg/hp	9.8 L/100 km 24.0 mpg US 28.8 mpg UK
Alfa Romeo1592.4 JTDM 20V	128 hp/t 95 kW/t 7.8 kg/hp	7.2 L/100 km 32.7 mpg US 39.2 mpg UK

Detailed score breakdown

Vehicle

LexusIS II (XE20)250 V6

Alfa Romeo1592.4 JTDM 20V

Power

208 hp

155 kW

210 hp

157 kW

Torque

252 Nm

186 lb-ft

400 Nm

295 lb-ft

Acceleration

8.1 s

8.3 s

Top speed

Unrestricted

240 km/h149 mph

Restricted

230 km/h143 mph

227 km/h

141 mph

Lightness

1,635 kg

3,605 lb

1,645 kg

3,627 lb

Fuel consumption

9.8 L/100 km

24.0 mpg US

28.8 mpg UK

7.2 L/100 km

32.7 mpg US

39.2 mpg UK

Practicality

Doors/seats	4 doors 5 seats
Trunk	378 L 13.3 cu ft
Length	4,575 mm 180.1 in
Height	1,440 mm 56.7 in

Doors/seats	4 doors 5 seats
Trunk	405 L 14.3 cu ft
Length	4,660 mm 183.5 in
Height	1,422 mm 56.0 in

Range score

663 km

412 mi

972 km

604 mi

CO2 score

192 g/km

Trunk score

378 L

13.3 cu ft

405 L

14.3 cu ft

Power-to-weight score

127 hp/t

95 kW/t

7.9 kg/hp

128 hp/t

95 kW/t

7.8 kg/hp

Overall

Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Average annual distanceDistance unitFuel price in your local currencyPrice unit

Enter the fuel price in your local currency, for example €/L, $/gal, £/L or any other local currency.

LC = Local Currency

Fuel cost and annual usage
Vehicle	Lexus IS II (XE20) 250 V6	Alfa Romeo 159 2.4 JTDM 20V
Consumption	9.8 L/100 km24 mpg US28.8 mpg UK	7.2 L/100 km32.7 mpg US39.2 mpg UK
Cost / 100 km	17.15 LC100 km	12.60 LC100 km
Cost / 100 mi	27.60 LC100 mi	20.28 LC100 mi
Annual fuel used	1,470 L388 US gal323 UK gal	1,080 L285 US gal238 UK gal
Annual fuel cost	2,573 LC/year	1,890 LC/year