Among compact sport sedans, it's the BMW 3-Series that's definitely the top rival to the G37.
And with the 3-Series redesigned this past year, it's tougher competition than ever.
The latest 3-Series has a fuel-efficient turbo four-cylinder engine offering up to 34 mpg highway, yet its handling retains some of the expected sharpness (with excellent steering).
A turbo six is also offered in the 335i models.
The Audi A4 is another top rival.
Its rear-biased all-wheel-drive system promises more driving enjoyment and it has top-notch cabin appointments, although it's quite tight inside.
The interior of the Lexus IS 350 is also quite cramped, with a design that looks more dated, and it doesn't feel quite as sporty overall as the G37.
The Acura TL, in its performance-oriented TL-SH guise, would make a good alternative to the G37 if you size up the G37 as just too cramped and noisy.
So actually would be the somewhat larger, somewhat more refined Infiniti M sedans, which are still quite engaging.
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 2013 INFINITI GBrowse Used Listings |  2013 Acura TLBrowse Used Listings |  2013 Audi A4Browse Used Listings |  2013 BMW 3-SeriesBrowse Used Listings |
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| Quick Specs | |||
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The 2013 Infiniti G37 offers some of the sensory thrills of a sports car, in a more practical sedan body style, although it's not as refined as other premium-brand alternatives. |
The 2013 Acura TL is a comfortable, attractive, and well-equipped luxury sedan--but in top SH-AWD guise it morphs into something that even driving enthusiasts will find compelling. |
Magnificent design and technology sets the Audi A4 apart, but it's not quite as sporty as its BMW and Cadillac competition. |
The 2013 BMW 3-Series is safe, fuel-efficient, and well-connected, yet it delivers the class-leading performance and handling that enthusiasts have come to expect. |
| MSRP From | |||
| $32,850 | $35,905 | $32,500 | $32,550 |
| Gas Mileage | |||
| 16 MPG City / 27 MPG Hwy | 17 MPG City / 29 MPG Hwy | 17 MPG City / 32 MPG Hwy | 13 MPG City / 36 MPG Hwy |
| Engine | |||
| Gas V6 | Gas V6 | Turbocharged Gas I4 | Turbocharged Gas I4 |
| EPA Class | |||
| Midsize Cars | Mid-Size | Compact Cars | Compact Cars |
| Style Name | |||
| 4-Door x AWD | 4-Door Sedan Automatic 2WD | 4-Door Sedan CVT FrontTrak 2.0T Premium | 4-Door Sedan 320i RWD South Africa |
| Drivetrain | |||
| All-Wheel Drive | Front-Wheel Drive | Front Wheel Drive | Rear Wheel Drive |
| Passenger Capacity | |||
| 5 | 5 | 5 | 5 |
| Passenger Doors | |||
| N/A | N/A | N/A | N/A |
| Body Style | |||
| 4 Door Sedan | Sedan | Sedan | Sedan |
| Transmission | |||
| Automatic w/OD | Automatic w/Manual Shift | Continuously Variable Ratio | Automatic w/Manual Shift |
| Detailed Spec Comparison | |||
| 2013 INFINITI G vs. 2013 Acura TL | 2013 INFINITI G vs. 2013 Audi A4 | 2013 INFINITI G vs. 2013 BMW 3-Series | |
