The Audi A6 is near the end of its production cycle, but it still stands well against rival mid-size luxury sedans, and its design has aged well; on the other hand in today’s market the S90 feels more distinct with respect to surfaces and details.
The BMW 5-Series is also soon due to be replaced, but delivers impressive refinement and interior space, along with a long list of available tech features like a head-up display and night vision.
The Acura RLX is actually very pleasant to drive in front-wheel-drive form, although it’s not as much of a standout in style as others in its class.
Finally, the Mercedes-Benz E-Class is also due for a redesign; the current version is probably the most conservative (yet comfort-oriented) pick in the class, but the new version finally steps up styling and design to match the smaller C-Class and larger S-Class.
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 2017 Volvo S90Browse Used Listings |  2018 INFINITI Q70Browse Used Listings |  2017 Audi A6Browse Used Listings |  2017 Mercedes-Benz E ClassBrowse Used Listings |  2016 Acura RLXBrowse Used Listings |  2016 BMW 5-SeriesBrowse Used Listings |
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| Quick Specs | |||||
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The 2017 Volvo S90 gets all the elegance and style of the brilliant new XC90 crossover, in a sedan package. |
The 2018 Infiniti Q70 stands alone as a warm take on luxury that others have left behind. It’s not as luxurious as the others—but it’s not as expensive as those, either. |
The 2017 Audi A6 is a stellar mid-size luxury sedan; it's a bit sedate, but still good enough to compete with some flagship vehicles from other brands. |
With the 2017 E-Class, Mercedes-Benz is pushing the boundaries of its autonomous driving technology, and backing it up with S-Class style. |
The 2016 Acura RLX offers some minor updates to an already competent—if subtle—luxury package. It's an interesting alternative to the other cars in its class. |
The 2016 BMW M5 is the king of the 5-Series mountain, which isn't a bad place to be. It just may not be king of the sports sedan mountain anymore. |
| MSRP From | |||||
| $46,950 | $50,300 | $47,600 | $52,150 | $50,950 | $50,200 |
| Gas Mileage | |||||
| 22 MPG City / 34 MPG Hwy | 16 MPG City / 33 MPG Hwy | 18 MPG City / 34 MPG Hwy | 17 MPG City / 30 MPG Hwy | 20 MPG City / 32 MPG Hwy | 14 MPG City / 38 MPG Hwy |
| Engine | |||||
| Intercooled Turbo Regular Unleaded I-4 | Premium Unleaded V-6 | Intercooled Turbo Premium Unleaded I-4 | Intercooled Turbo Premium Unleaded I-4 | Premium Unleaded V-6 | Intercooled Turbo Premium Unleaded I-4 |
| EPA Class | |||||
| Mid-Size Cars | Mid-Size Cars | Mid-Size Cars | Midsize Cars | Mid-Size Cars | Mid-Size Cars |
| Style Name | |||||
| T5 FWD Momentum | 3.7 LUXE RWD | 2.0 TFSI Premium FWD | E 300 Luxury RWD Sedan | 4-Door Sedan Navigation | 4-Door Sedan 528i RWD |
| Drivetrain | |||||
| Front Wheel Drive | Rear Wheel Drive | Front Wheel Drive | Rear Wheel Drive | Front Wheel Drive | Rear Wheel Drive |
| Passenger Capacity | |||||
| 5 | 5 | 5 | 5 | 5 | 5 |
| Passenger Doors | |||||
| N/A | N/A | N/A | N/A | N/A | N/A |
| Body Style | |||||
| Sedan | Sedan | Sedan | Sedan | Sedan | Sedan |
| Transmission | |||||
| Automatic w/OD | Automatic w/OD | Auto-Shift Manual w/OD | Automatic w/OD | Automatic w/OD | Automatic w/OD |
| Detailed Spec Comparison | |||||
| 2017 Volvo S90 vs. 2018 INFINITI Q70 | 2017 Volvo S90 vs. 2017 Audi A6 | 2017 Volvo S90 vs. 2017 Mercedes-Benz E Class | 2017 Volvo S90 vs. 2016 Acura RLX | 2017 Volvo S90 vs. 2016 BMW 5-Series | |
