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2012 Infiniti M56x

Rating7.1

Ranked #13 in

Midsize Sedan

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$61,700

Starting Price

Year

Nathan Dyer

Senior Editor,

Updated on October 31, 2022

Pros	Cons	What's New
Enthusiastic to drive due to a well-balanced chassis	The ride gets very firm if you opt for the sport package	It remains unchanged for 2012
Stylish interior design with premium materials	Not so easy to park in tight spaces due to the length
Lots of hi-tech features available

Specs & Features

$61,700

price

420 hp @ 6000 rpm

horsepower

417 lb.-ft. @ 4400 rpm

torque

7-Speed Shiftable Automatic

transmission

5.6L 8cyl AWD 7A

engine

basic warranty

Overview

Competing in the midsize sedan segment, the 2012 Infiniti M56x Sedan is a direct competitor to the Mercedes-Benz E 550 Sport Sedan and the BMW 550i xDrive Sedan. With a single trim level, the Infiniti M56x Sedan carries an MSRP of $61,700. It offers a 5.6L V8 engine and a 7-speed automatic transmission, producing 420 horsepower and 417 lb-ft of torque. Through this powertrain, the Infiniti M56x Sedan manages a 0-60 of 4.6 seconds and a combined fuel economy of 18 MPG.

Buying Advice

Offered as a standalone trim, the M56x comes standard with the all-wheel drive system. Feature-wise, it gets you automatic bi-xenon headlights, a sunroof, heated eight-way power front seats, power tilt-and-telescoping steering column, a rearview camera, and plenty more comfort features.

Trims

Base
$61,700 onwards

18-inch silver aluminum Wheels
1St row LCD monitor
A-Spec Sport Seats
AM/FM/Satellite
Dual zone automatic front air conditioning
Front Fog/driving lights
Front passengers heated-cushion
Remote keyless entry
Seek-Scan Radio
Sliding and tilting glass Sunroof

Compare to similar cars

7.1

2012 Infiniti M56x

Price

$61,700

Engine

Gasoline

Rating

7.07

Horsepower

420 hp @ 6000 rpm

Torque

417 lb.-ft. @ 4400 rpm

Capacity

Read Review

8.0

2012 Acura TL

$35,705- $45,185

Gasoline

280 hp @ 6200 rpm

254 lb.-ft. @ 5000 rpm

Read Review

7.7

2012 Acura RL

$48,200- $57,045

Gasoline

7.7

300 hp @ 6300 rpm

271 lb.-ft. @ 5000 rpm

Read Review

8.2

2012 Audi A7

$59,250

Gasoline

8.23

310 hp @ 5500 rpm

325 lb.-ft. @ 2900 rpm

Read Review

8.1

2012 Audi A6

$41,700- $49,900

Gasoline

8.07

211 hp @ 4300 rpm

258 lb.-ft. @ 3250 rpm

Read Review

8.0

2012 BMW 5 Series

$46,900- $64,300

Gasoline

8.04

240 hp @ 5000 rpm

260 lb.-ft. @ 1250 rpm

Read Review

8.7

2012 Cadillac CTS

$35,915- $51,650

Gasoline

8.72

270 hp @ 7000 rpm

223 lb.-ft. @ 5700 rpm

Read Review

8.2

2012 Infiniti M56

$59,200- $61,700

Gasoline

8.16

420 hp @ 6000 rpm

417 lb.-ft. @ 4400 rpm

Read Review

7.3

2012 Infiniti M37x

$49,850

Gasoline

7.27

330 hp @ 7000 rpm

270 lb.-ft. @ 5200 rpm

Read Review

8.4

2012 Infiniti M37

$47,700- $49,850

Gasoline

8.38

330 hp @ 7000 rpm

270 lb.-ft. @ 5200 rpm

Read Review

2012 Infiniti M56x vs competitor's 0-60

Car Name	0-60 MPH	Quarter Mile	Top Speed
2012 Infiniti M56x Ranked #1	4.7 sec	13.4 sec	-
2012 Infiniti M56 Ranked #2	4.8 sec	13.4 sec	-
2012 Infiniti M37x Ranked #3	5.3 sec	14.1 sec	-
2012 Lexus LS 460 Ranked #4	5.4 sec	13.8 sec	-
2012 Audi A7 Ranked #4	5.4 sec	14.2 sec	130 mph
2012 Jaguar XF Ranked #5	5.5 sec	13.4 sec	121 mph

Car Name	MPG City	MPG Highway	MPG Combined	Fuel Tank Capacity	Range (C/H)
2012 Infiniti M56x Ranked #8	16 mpg	23 mpg	18 mpg	20 gal.	320/460 mi.
2012 Audi A6 Ranked #1	25 mpg	33 mpg	28 mpg	19.8 gal.	495/653.4 mi.
2012 BMW 5 Series Ranked #2	23 mpg	34 mpg	27 mpg	18.5 gal.	425.5/629 mi.
2012 Volvo S80 Ranked #3	20 mpg	29 mpg	23 mpg	18.5 gal.	370/536.5 mi.
2012 Acura TL Ranked #3	20 mpg	29 mpg	23 mpg	18.5 gal.	370/536.5 mi.
2012 Lexus ES 350 Ranked #4	19 mpg	28 mpg	22 mpg	18.5 gal.	351.5/518 mi.

2012 Infiniti M56x vs competitor's dimensions

Car Name	Length	Width	Height	Ground Clearance	Wheelbase
2012 Infiniti M56x Ranked #6	194.7 in.	72.6 in.	59.6 in.	5.7 in.	114.2 in.
2012 Lincoln MKS Ranked #1	204.1 in.	75.9 in.	61.6 in.	8 in.	112.9 in.
2012 Lexus LS 460 Ranked #2	199.2 in.	73.8 in.	58.1 in.	5.5 in.	116.9 in.
2012 Acura RL Ranked #3	195.8 in.	72.7 in.	57.2 in.	5.7 in.	110.2 in.
2012 Audi A7 Ranked #4	195.6 in.	75.2 in.	55.9 in.	5 in.	114.7 in.
2012 Jaguar XF Ranked #5	195.3 in.	75.6 in.	57.5 in.	4.1 in.	114.5 in.

2012 Infiniti M56x vs competitor's trunk space

Car Name	Trunk Capacity	Passenger Volume	Max Trunk Volume
2012 Infiniti M56x Ranked #9	14.9 cu.ft.	103.6 cu.ft.	14.9 cu.ft.
2012 Audi A7 Ranked #1	24.5 cu.ft.	101.5 cu.ft.	323.1 cu.ft.
2012 Infiniti M56 Ranked #2	14.9 cu.ft.	103.6 cu.ft.	14.9 cu.ft.
2012 Lincoln MKS Ranked #3	18.7 cu.ft.	105.8 cu.ft.	18.7 cu.ft.
2012 Acura RL Ranked #4	13.1 cu.ft.	99.1 cu.ft.	13.1 cu.ft.
2012 Acura TL Ranked #5	13.1 cu.ft.	98.2 cu.ft.	13.1 cu.ft.

2012 Infiniti M56x vs competitor's cargo space

Car Name	Cargo Volume	Cargo Volume w/ Seat Area	Max Cargo Volume	Bed Length
2012 Infiniti M56x Ranked #1	14.9 cu.ft.	14.9 cu.ft.	14.9 cu.ft.	-
2012 Infiniti M37x Ranked #2	14.9 cu.ft.	14.9 cu.ft.	14.9 cu.ft.	-
2012 Audi A6 Ranked #3	4.2 cu.ft.	14.1 cu.ft.	4.2 cu.ft.	-
2012 BMW 5 Series Ranked #4	13.9 cu.ft.	14 cu.ft.	14 cu.ft.	-
2012 Lincoln MKS Ranked #5	50.4 cu.ft.	18.7 cu.ft.	18.7 cu.ft.	-
2012 Infiniti M56 Ranked #6	72.6 cu.ft.	14.9 cu.ft.	14.9 cu.ft.	-

2012 Infiniti M56x vs competitor's towing capacity

Car Name	Towing Capacity	Payload Capacity	Weight
2012 Infiniti M56x Ranked #3	-	1055 lbs.	4226 lbs.
2012 Volvo S80 Ranked #1	3300 lbs.	995 lbs.	3761 lbs.
2012 Lincoln MKS Ranked #2	1000 lbs.	-	4151 lbs.
2012 Acura RL Ranked #2	1000 lbs.	850 lbs.	4099 lbs.
2012 Cadillac CTS Ranked #2	1000 lbs.	1414 lbs.	3858 lbs.
2012 Lincoln MKZ Ranked #3	-	-	3598 lbs.