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2011 Infiniti M56

Rating7.5

Ranked #13 in

Midsize Sedan

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$58,450 - $60,950

Starting Price

Year

Nathan Dyer

Senior Editor,

Updated on November 3, 2023

Pros	Cons	What's New
Exceptional performance and handling	Firm ride qualtiy	All-new model replacing the M45 Sedan
Loaded with tech and luxury features	Unimpressive gas mileage
Opulent and silent cabin

Specs & Features

$60,950

price

420 hp @ 6000 rpm

horsepower

417 lb.-ft. @ 4400 rpm

torque

7-Speed Automatic

transmission

5.6L 8cyl AWD 7A

engine

basic warranty

Overview

Competing in the midsize sedan segment, the 2011 Infiniti M56 Sedan is a direct competitor to the Mercedes-Benz E 550 Sport Sedan and the BMW 550i Sedan. With a single trim level, the 2011 Infiniti M56 Sedan carries an MSRP of $58,450. 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 M56 Sedan manages a 0-60 of 5.2 seconds and a combined fuel economy of 19 MPG.

Buying Advice

The 2011 Infiniti M56 Sedan is a sporty and spacious sedan offered at an impressive price point. It is a standalone trim while there are some packages offered. We recommend getting the Sport package that adds 20-inch wheels, summer tires, sport-tuned suspension and brakes, four-wheel active steering, sports seats, steering wheel, and unique exterior styling elements.

Trims

Base
$58,450 onwards

18-inch silver aluminum Wheels
1St row LCD monitor
A-Spec Sport Seats
Dual zone automatic front air conditioning
Front Fog/driving lights
Front passengers heated-cushion
Heated mirrors
Rain sensing windsheild wiper
Remote keyless entry
Sliding and tilting glass Sunroof

Compare to similar cars

7.5

2011 Infiniti M56

Price

$58,450- $60,950

Engine

Gasoline

Rating

7.45

Horsepower

420 hp @ 6000 rpm

Torque

417 lb.-ft. @ 4400 rpm

Capacity

Read Review

7.7

2011 Acura TL

$35,305- $43,585

Gasoline

7.66

280 hp @ 6200 rpm

254 lb.-ft. @ 5000 rpm

Read Review

7.6

2011 Acura RL

$47,200- $55,150

Gasoline

7.64

300 hp @ 6300 rpm

271 lb.-ft. @ 5000 rpm

Read Review

7.8

2011 Audi A6

$45,200- $59,150

Gasoline

7.83

265 hp @ 6500 rpm

243 lb.-ft. @ 3250 rpm

Read Review

8.5

2011 BMW 5 Series

$45,050- $62,500

Gasoline

8.47

240 hp @ 6600 rpm

230 lb.-ft. @ 2600 rpm

Read Review

8.5

2011 Cadillac STS

$47,280- $56,380

Gasoline

8.46

302 hp @ 6300 rpm

272 lb.-ft. @ 5200 rpm

Read Review

8.6

2011 Cadillac DTS

$46,680- $59,875

Gasoline

8.61

275 hp @ 6000 rpm

295 lb.-ft. @ 4400 rpm

Read Review

8.7

2011 Cadillac CTS

$35,345- $51,165

Gasoline

8.69

270 hp @ 7000 rpm

223 lb.-ft. @ 5700 rpm

Read Review

7.6

2011 Hyundai Genesis

$22,250- $43,000

Gasoline

7.64

290 hp @ 6200 rpm

264 lb.-ft. @ 4500 rpm

Read Review

6.9

2011 Infiniti M56x

$60,950

Gasoline

6.87

420 hp @ 6000 rpm

417 lb.-ft. @ 4400 rpm

Read Review

2011 Infiniti M56 vs competitor's 0-60

Car Name	0-60 MPH	Quarter Mile	Top Speed
2011 Infiniti M56 Ranked #2	4.8 sec	13.4 sec	-
2011 Infiniti M56x Ranked #1	4.7 sec	13.4 sec	108 mph
2011 Infiniti M37x Ranked #3	5.3 sec	14.1 sec	-
2011 Lexus LS 460 Ranked #4	5.4 sec	13.8 sec	-
2011 Jaguar XF Ranked #5	5.5 sec	14.0 sec	121 mph
2011 Lexus GS 460 Ranked #5	5.5 sec	-	153 mph

Car Name	MPG City	MPG Highway	MPG Combined	Fuel Tank Capacity	Range (C/H)
2011 Infiniti M56 Ranked #5	16 mpg	25 mpg	19 mpg	20 gal.	320/500 mi.
2011 BMW 5 Series Ranked #1	21 mpg	32 mpg	25 mpg	18.5 gal.	407/592 mi.
2011 Lexus ES 350 Ranked #2	19 mpg	27 mpg	22 mpg	18.5 gal.	351.5/499.5 mi.
2011 Volvo S80 Ranked #2	19 mpg	27 mpg	22 mpg	18.5 gal.	351.5/499.5 mi.
2011 Lexus GS 350 Ranked #2	19 mpg	26 mpg	22 mpg	18.8 gal.	357.2/488.8 mi.
2011 Audi A6 Ranked #2	21 mpg	28 mpg	22 mpg	21.1 gal.	443.1/633 mi.

2011 Infiniti M56 vs competitor's dimensions

Car Name	Length	Width	Height	Ground Clearance	Wheelbase
2011 Infiniti M56 Ranked #8	194.7 in.	72.6 in.	59.1 in.	5.9 in.	114.2 in.
2011 Cadillac DTS Ranked #1	207.6 in.	74.8 in.	57.6 in.	5 in.	115.6 in.
2011 Lincoln MKS Ranked #2	204.1 in.	75.9 in.	61.6 in.	8 in.	112.9 in.
2011 Lexus LS 460 Ranked #3	199.2 in.	73.8 in.	58.1 in.	5.5 in.	116.9 in.
2011 Cadillac STS Ranked #4	196.7 in.	72.6 in.	57.6 in.	6 in.	116.4 in.
2011 Hyundai Genesis Ranked #5	195.9 in.	74.4 in.	58.1 in.	5.2 in.	115.6 in.

2011 Infiniti M56 vs competitor's trunk space

Car Name	Trunk Capacity	Passenger Volume	Max Trunk Volume
2011 Infiniti M56 Ranked #2	14.9 cu.ft.	103.6 cu.ft.	14.9 cu.ft.
2011 Jaguar XF Ranked #1	17.7 cu.ft.	143.9 cu.ft.	92.2 cu.ft.
2011 Acura RL Ranked #3	13.1 cu.ft.	99.1 cu.ft.	13.1 cu.ft.
2011 Cadillac STS Ranked #4	13.8 cu.ft.	102.9 cu.ft.	13.8 cu.ft.
2011 Cadillac DTS Ranked #4	18.8 cu.ft.	113.2 cu.ft.	18.8 cu.ft.
2011 Infiniti M37x Ranked #5	14.9 cu.ft.	-	14.9 cu.ft.

2011 Infiniti M56 vs competitor's cargo space

Car Name	Cargo Volume	Cargo Volume w/ Seat Area	Max Cargo Volume	Bed Length
2011 Infiniti M56 Ranked #1	72.6 cu.ft.	14.9 cu.ft.	14.9 cu.ft.	-
2011 Hyundai Genesis Ranked #2	16 cu.ft.	16 cu.ft.	16 cu.ft.	-
2011 Infiniti M56x Ranked #3	14.9 cu.ft.	14.9 cu.ft.	14.9 cu.ft.	-
2011 Lexus ES 350 Ranked #4	14.7 cu.ft.	14.7 cu.ft.	14.7 cu.ft.	-
2011 Lexus GS 460 Ranked #5	15.2 cu.ft.	15.2 cu.ft.	15.2 cu.ft.	-
2011 Acura TL Ranked #6	12.3 cu.ft.	13.1 cu.ft.	47 cu.ft.	-

2011 Infiniti M56 vs competitor's towing capacity

Car Name	Towing Capacity	Payload Capacity	Weight
2011 Infiniti M56 Ranked #3	-	1115 lbs.	4028 lbs.
2011 Volvo S80 Ranked #1	3300 lbs.	995 lbs.	3825 lbs.
2011 Cadillac DTS Ranked #2	1000 lbs.	-	4009 lbs.
2011 Lincoln MKS Ranked #2	1000 lbs.	1123 lbs.	4127 lbs.
2011 Acura RL Ranked #2	1000 lbs.	850 lbs.	4083 lbs.
2011 Cadillac CTS Ranked #2	1000 lbs.	-	3849 lbs.