2027 Audi A6 e-tron vs 2027 Kia K5
The Kia K5 wins clearly, 80 to 72.1, on price, tech & comfort, safety. The Audi A6 e-tron is ahead on fuel & range and performance. Raise the fuel & range weight from 3 to 5 and it flips.
2027 Audi A6 e-tron
The 2027 Audi A6 e-tron is sold in the U.S. as an electric large hatchback with 4 EPA-rated configurations. Its longest-range version, the A6 e-tron ultra, is E…
2027 Kia K5
The 2027 Kia K5 is sold in the U.S. as a gas large sedan with 4 EPA-rated configurations. The most efficient version, the K5 w/Stop-Start, is EPA-rated at 30 mp…
2027 Kia K5
Clear winThe Kia K5 wins clearly, 80 to 72.1, on price, tech & comfort, safety. The Audi A6 e-tron is ahead on fuel & range and performance. Raise the fuel & range weight from 3 to 5 and it flips.
| Category · weight | 2027 Audi A6 e-tronoverall 72.1 | 2027 Kia K5overall 80 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pricew 4 | 41.5 | 100 | |||||||||
Base MSRP of the trim (or the model's lowest trim). Lower is better. | |||||||||||
| Fuel & rangew 3 | 100 | 25.7 | |||||||||
EPA annual fuel cost and combined mpg / MPGe; EV range when both are electric. | |||||||||||
| Safetyw 4 | 78.7 | 100 | |||||||||
NHTSA 5-Star rating, WhichTrim Safety Signal (open recalls by severity), owner complaints, standard driver-assist features (from the press kit, or from what the manufacturer filed with NHTSA where there is none). Open park-outside / do-not-drive advisories cost 25 points. | |||||||||||
| Space & cargow 2 | 100 | 73.4 | |||||||||
Seats, cargo volume behind the 1st and 2nd rows, rear legroom. | |||||||||||
| Performancew 2 | 100 | 58.4 | |||||||||
Horsepower, torque and horsepower per ton. | |||||||||||
| Tech & comfortw 3 | 38.8 | 100 | |||||||||
Standard (1) and optional (0.5) infotainment, convenience, climate and interior features from the manufacturer's press kit. | |||||||||||
| Warrantynot compared | No data | No data | |||||||||
| Overall | 72.1 | 80 | |||||||||
Trim vs trim · 6 of 7 categories compared
Audi A6 e-tron: base trim A6 Sportback e-tron (RWD) RWD · Kia K5: base trim LXS FWD. Pick a trim in the tool to compare any other trim.
Raise the fuel & range weight from 3 to 5 and the answer flips.
Where the gap is
the biggest differences, from the scorecard's own numbersWhere the 2027 Kia K5 wins
- It lists 41 standard driver-assist features against 6.
- It starts $39,010 lower ($27,690 against $66,700 base MSRP).
- It lists more comfort and tech equipment (49 points against 19 on the press-kit count, standard = 1, optional = ½).
Where the 2027 Audi A6 e-tron answers
- It is rated 127 combined against 30 (EPA mpg or MPGe).
- It costs $1,650 a year less to fuel on the EPA's estimate ($600 against $2,250).
What they share
- A Safety Signal of 100.
- 35.2 in of rear legroom.
Ranked by how far apart the two score on each measure, so a price gap and a horsepower gap are compared on the same scale. Every figure is on this page.
Specifications side by side
48 specs · manufacturer press kits| Spec | Audi A6 e-tronA6 Sportback e-tron (RWD) RWD | Kia K5LXS FWD |
|---|---|---|
| Pricing | ||
| Base MSRP (excludes destination) | $66,700 | $27,690 |
| Engine Basics | ||
| Aspiration | — | naturally aspirated |
| Cylinder count | — | 4 |
| Engine displacement | — | 2,497 cc |
| Engine type (full description) | One electric motor: Rear - Permanently-Excited Synchronous (PSM) | 2.5-Litre Gasoline Direct Injection (GDI) Engine with 8-Speed Automatic Transmission |
| Fuel injection system | — | gdi mpi |
| Valve configuration | — | Roller Swing Arm |
| Engine Output | ||
| Horsepower | 375 hp | 186 hp |
| Torque | — | 179 lb-ft |
| Fuel Economy | ||
| MPG (city) | 117 mpg | 26 mpg |
| MPG (combined) | 111 mpg | 30 mpg |
| MPG (highway) | 105 mpg | 37 mpg |
| Transmission | ||
| Final drive ratio | 9.242 | 3.195 |
| Transmission speeds | 1 | 8 |
| Transmission type | Single-Speed | automatic |
| Dimensions Exterior | ||
| Ground clearance | — | 5.3 in |
| Overall height | 58.6 in | 56.9 in |
| Overall length | 194 in | 193 in |
| Overall width | 76.2 in | 73.2 in |
| Wheelbase | 116 in | 112 in |
| Cargo | ||
| Cargo volume behind 1st row | 39.9 cu-ft | — |
| Cargo volume behind 2nd row | 26 cu-ft | 15.6 cu-ft |
| Total interior volume | — | 121 cu-ft |
| Seating | ||
| Passenger seating capacity | 5 | — |
| Headroom | ||
| Front headroom | 38.5 in | 40.2 in |
| Third-row headroom | 37.6 in | 37.8 in |
| Legroom | ||
| Front legroom | 41.4 in | 46.1 in |
| Third-row legroom | 35.2 in | 35.2 in |
| Weights | ||
| Curb weight (maximum) | — | 3,230 lbs |
| Curb weight (minimum) | 4,949 lbs | 3,230 lbs |
| Gross vehicle weight rating | — | 4,365 lbs |
| Suspension | ||
| Front suspension type | 5-link design | McPherson strut |
| Rear suspension type | 5-link design | Multi-link |
| Steering | ||
| Steering type | Electromechanical progressive steering with speed-sensitive power assist | Column Mounted-Motor Driven Power Steering (C-MDPS), Electric Motor |
| Turning radius (curb-to-curb) | 40.4 ft | 36 ft |
| Brakes | ||
| Front brake diameter | 350 mm | 305 mm |
| Front brake type | Four-piston fixed caliper, ventilated steel discs | ventilated disc |
| Parking brake type | Electro-mechanical | Electric brake operating on rear wheels |
| Rear brake diameter | 350 mm | 284 mm |
| Rear brake type | Single-piston floating caliper, ventilated steel discs | solid disc |
| Wheels | ||
| Wheel diameter | 20 in | 16 in |
| Wheel material | — | forged alloy |
| Wheel width | — | 6.5 in |
| Tires | ||
| Tire size | 235/45 R20 100H XL front / 265/40 R20 104H XL rear all-season run flat | P205/65R16 95H |
| Fuel System | ||
| Fuel tank capacity | — | 15.8 gal |
| Minimum recommended octane | — | 87 |
| Shoulder Room | ||
| Front shoulder room | 58.2 in | 58 in |
| Third-row shoulder room | 57.3 in | 56.1 in |
Green marks the better value where the direction is unambiguous (more room, more power, lower price). Blank rows are specs the press kit does not publish.
Equipment, feature by feature
194 features · differences first, then sharedSafety43 differ · 45 listed
| Feature | Audi A6 e-tronA6 Sportback e-tron (RWD) RWD | Kia K5LXS FWD |
|---|---|---|
| Forward Collision Avoidance Assist (FCA) with Cyclist Detection (includes Car / Pedestrian) / Junction Turning Detection (Car) (Camera and Radar based) | — | std |
| Smart Cruise Control with Stop and Go (SCC w/ S&G) | — | std |
| Lane Following Assist (LFA) | — | std |
| Rear Cross-Traffic Collision-Avoidance Assist (RCCA) | — | std |
| 12.3-inch ccNC Radio, Navigation, Satellite Digital Radio, Rear view Camera, Telematics, VR, Wireless CP/AA | — | std |
| Dual front advanced airbags | — | std |
| Dual front seat-mounted side airbags | — | std |
| Full-length side curtain airbags | — | std |
| Lane Keeping Assist (LKA) | — | std |
| Driver Attention Warning (DAW) | — | std |
| Dual rear seat-mounted side airbags | — | std |
| Lower Anchors and Tethers for Children (LATCH) | — | std |
| Parking Distance Warning-Forward (PDW-F) | — | std |
| Parking Distance Warning-Reverse (PDW-R) | — | std |
| Safe Exit Assist (SEA) with Lock Combined with Blind-Spot Collision Avoidance Assist (BCA) and Power Child Lock | — | std |
| Auto door lock AT position | — | std |
| Blind Spot Collision Avoidance Assist - Rear (BCA) | — | std |
| Cruise control | — | std |
| Driver seat-belt warning system | — | std |
| Driver's knee airbag | — | std |
| Electronic Parking Brake (EPB) with auto-hold | — | std |
| Emergency internal trunk release | — | std |
| Front and rear 3-point seat belts | — | std |
| Front seat-belt pre tensioner and load limiter | — | std |
| Front seat-belt reminder | — | std |
| Height-adjustable front seat-belt anchors | — | std |
| High Beam Assist (HBA) | — | std |
| Hill-start Assist Control (HAC) | — | std |
| Impact sensing door unlock | — | std |
| Key operated warning system | — | std |
| Leading Vehicle Departure Alert (LVDA) | — | std |
| Park assist pro with remote functionality (Prestige trim) | std | — |
| Parking brake warning system | — | std |
| Rear child-safety door locks (power) | — | std |
| Rear emergency brake assist (Prestige trim) | std | — |
| Rear Occupant Alert (ROA) (door logic based) | — | std |
| Rear seat-belt pre tensioner | — | std |
| Reverse assist: steering takeover for last 150 feet when backing towards spot | std | — |
| Top view camera system with 3D view (Prestige trim) | std | — |
| Traction Control System (TCS) | — | std |
| Vehicle Stability Management (VSM) | — | std |
| Immobilizer | — | std |
| Tire Pressure Monitor System (TPMS) | — | std |
| Anti-lock Brakes System (ABS) | std | std |
| Electronic Stability Control (ESC) | std | std |
Infotainment9 differ · 9 listed
| Feature | Audi A6 e-tronA6 Sportback e-tron (RWD) RWD | Kia K5LXS FWD |
|---|---|---|
| 12.3-inch ccNC Lite Radio, Satellite Digital Radio, Rear view Camera, Telematics, Wireless CP/AA | — | std |
| 6 speakers (including 2 tweeters) | — | std |
| All-new MMI® technology and design enhancements | std | — |
| Audi dashcam system (high-resolution 4K, HDR, integrated into base of interior rear-view mirror) | opt | — |
| Bluetooth® wireless technology | — | std |
| Expanded and upgraded voice-control capabilities (Audi assistant with AI) | std | — |
| Shark fin antenna | — | std |
| Steering wheel-mounted audio, Bluetooth®, and cruise controls | — | std |
| Technology package: Augmented reality Head-up display and passenger display | opt | — |
Convenience13 differ · 13 listed
| Feature | Audi A6 e-tronA6 Sportback e-tron (RWD) RWD | Kia K5LXS FWD |
|---|---|---|
| Smart key with Push-Button Start, Remote Engine Start, Climate and Smart trunk (open) | — | std |
| Destination and Delivery (USD): $1,395 | std | — |
| Front console tray with 12V power outlet (x1), USB-C (x2 - 1 data and 1 charge port) | — | std |
| New Power Nap mode creates calm and restful atmosphere during charging sessions | std | — |
| New Vehicle Limited Warranty: 4 year / 50,000 mi., whichever occurs first | std | — |
| Power driver window with auto-up/down | — | std |
| Roadside Assistance: 4 year / Unlimited mileage | std | — |
| Scheduled Maintenance: First 3 years / 30,000 mi. of ownership, whichever occurs first | std | — |
| Second row USB-C charge ports (x2) | — | std |
| Starting MSRP (USD): $66,700 / $68,700 / $79,600 | std | — |
| Two-turn driver door unlock | — | std |
| Central door lock switch | — | std |
| Front and rear power windows | — | std |
Climate2 differ · 2 listed
| Feature | Audi A6 e-tronA6 Sportback e-tron (RWD) RWD | Kia K5LXS FWD |
|---|---|---|
| Air quality package (Prestige trim) | std | — |
| Dual Zone - Full Automatic Temperature Control (D-FATC) | — | std |
Seating6 differ · 6 listed
| Feature | Audi A6 e-tronA6 Sportback e-tron (RWD) RWD | Kia K5LXS FWD |
|---|---|---|
| 60/40 split-folding rear seat | — | std |
| Cloth seat trim | — | std |
| Manual Driver and Front Passenger Seat with Double Recline, Sliding Adjustment, and Height Adjustment | — | std |
| Rear outboard adjustable headrests, up/down | — | std |
| Seating: 5 | std | — |
| Rear center arm rest with cup holder | — | std |
Interior39 differ · 39 listed
| Feature | Audi A6 e-tronA6 Sportback e-tron (RWD) RWD | Kia K5LXS FWD |
|---|---|---|
| 4.2-inch Color TFT LCD Color Super Vision display panel | — | std |
| Assist Grips (x4) | — | std |
| Black paint B/C Pillar trim | — | std |
| Cargo lamp | — | std |
| Coat hook (x1) | — | std |
| Dark silver metal paint power window switch panel | — | std |
| Door scuff plates with vehicle name logo | — | std |
| Experience worlds: Activating, Relaxing, and Harmonizing interior mood scenarios (interior lighting, sound, massage, climate) | std | — |
| Headroom, Front (in.): 38.5 | std | — |
| Headroom, Rear (in.): 37.6 | std | — |
| Illuminated ignition key cylinder | — | std |
| IMG skin front upper door trim | — | std |
| Leather wrapped door upper armrest trim | — | std |
| Legroom, Front (in.): 41.4 / 41.4 / 41.0 | std | — |
| Legroom, Rear (in.): 35.2 | std | — |
| Low density Tricoat Cloth head liner | — | std |
| Metallic paint center fascia panel | — | std |
| Metallic paint dash pad and door trim accents | — | std |
| Overhead front map lamp | — | std |
| Plastic center door trim | — | std |
| Plastic cover door side armrest trim | — | std |
| Plastic lower dash pad | — | std |
| Plastic rear upper door trim | — | std |
| Plastic side garnish armrest trim | — | std |
| Polyurethane wrapped gearshift knob | — | std |
| Polyurethane-wrapped (Metal Paint finish) steering wheel | — | std |
| Rear room lamp | — | std |
| Shoulder Room, Front (in.): 58.2 | std | — |
| Shoulder Room, Rear (in.): 57.3 | std | — |
| Silver metallic paint inside door handles | — | std |
| Updated multifunction steering-wheel design featuring return of the scroll wheel | std | — |
| Upper crash pad with in-mold artificial stitch | — | std |
| Day & night rear-view mirror | — | std |
| Front console with armrest, storage and cup holders | — | std |
| Manual tilt and telescopic steering column | — | std |
| Sun visor with vanity mirror with LED lights, ticket holder and extension | — | std |
| Front seatback pockets with back panel | — | std |
| Front and rear door map pockets with bottle holder | — | std |
| Rheostat (Dimmer Switch) | — | std |
Exterior36 differ · 36 listed
| Feature | Audi A6 e-tronA6 Sportback e-tron (RWD) RWD | Kia K5LXS FWD |
|---|---|---|
| 16-inch alloy wheels | — | std |
| Acoustic laminated windshield | — | std |
| Black windshield molding, door pillar and frame cover | — | std |
| Body-color outside door handles | — | std |
| Body-color outside mirrors with black base | — | std |
| Body-color side sill molding | — | std |
| Bright chrome DLO front and rear molding | — | std |
| Curb Weight (lbs.): 4,949 / 5,192 / 5,225 | std | — |
| Digital OLED taillights (Prestige trim) | std | — |
| Drag Coefficient (Cd.): 0.23 / 0.23 / 0.24 | std | — |
| Gloss black rear bumper | — | std |
| Height (in.): 58.6 / 58.6 / 58.5 | std | — |
| Hyper Silver metallic radiator grille | — | std |
| LED Daytime Running Lights (DRL) | — | std |
| LED Multi-Focus Reflector (MFR) Head Lights | — | std |
| LED rear combination lamps | — | std |
| Length (in.): 194.0 | std | — |
| Outside door handle pocket lighting | — | std |
| Overall Width with Mirrors (in.): 84.1 | std | — |
| Overall Width without Mirrors (in.): 76.2 | std | — |
| Power adjustable heated outside mirrors | — | std |
| S line black optic package: 20-inch 5-spoke-tripod design wheels bi-color finish, Anthracite Audi rings, Black exterior trim, mirror housings, door handle inlays, Black wheel center caps, black front grille | opt | — |
| Single exhaust with simulated dual muffler | — | std |
| Solar control glass (windshield, doors, back window, backlite) | — | std |
| Tires (Optional): 225/55 R19 103H XL front / 245/50 R19 105H XL rear all-season / 245/40 R21 100Y XL front / 275/35 R21 103Y XL rear summer (S6) | std | — |
| Tires (Standard): 235/45 R20 100H XL front / 265/40 R20 104H XL rear all-season run flat | std | — |
| Variable intermittent windshield wipers | — | std |
| Wheelbase (in.): 116.1 | std | — |
| Wheels (Optional): 19" 5-arm dynamic design, platinum finish / 21" 5-arm dynamic design, bicolor finish (S6) | std | — |
| Wheels (Optional): 20" 5-spoke-tripod design, bi-color finish / 21" Multispoke-S design, bicolor finish (S6) | std | — |
| Wheels (Standard): 20" 5-arm aero design, bicolor finish / 20" 10-spoke aero design, bicolor finish (S6) | std | — |
| Auto light control | — | std |
| Rear-window defroster | — | std |
| LED High Mounted Stop Lamp | — | std |
| Temporary spare tire | — | std |
| Low washer fluid warning system | — | std |
Powertrain33 differ · 33 listed
| Feature | Audi A6 e-tronA6 Sportback e-tron (RWD) RWD | Kia K5LXS FWD |
|---|---|---|
| Front-Wheel Drive (FWD) | — | std |
| 0-100 kph (secs.) Est.: 5.4 / 4.5 / 3.9 | std | — |
| 0-60 mph (secs.) Est.: 5.2 / 4.3 / 3.7 | std | — |
| 2.5-Litre Gasoline Direct Injection (GDI) Engine with 8-Speed Automatic Transmission | — | std |
| Audi drive select assistant (automatically adjusts drive select mode to suit driving situation) | std | — |
| Auto Engine Control (Vehicle Automatic Shut-Off) | — | std |
| Battery Pack Construction: 180 Prismatic Cells, 12 Modules, Aluminum Battery Case Reinforced with Extruded Aluminum Cross-Sections | std | — |
| Battery Size (Gross): 100 kWh | std | — |
| Battery Size (Net): 94.4 kWh | std | — |
| Battery Type: 800V Lithium Ion | std | — |
| Charge Port (Driver side): AC/DC Combo Port J1772 / CCS | std | — |
| Charge Port (Passenger side): AC Port J1772 | std | — |
| Column Mounted Motor Driven Power Steering (C-MDPS) | — | std |
| Configuration: Single Rear Motor / Single Front / Single Rear Motor | std | — |
| DC Fast Charging (270 kW): 21 minutes (10% - 80% charge) | std | — |
| Drive Mode Select | — | std |
| Driven Wheels: Rear-Wheel Drive / All-Wheel Drive | std | — |
| Electric Motor Type: One electric motor: Rear - Permanently-Excited Synchronous (PSM) / Two electric motors: Front - Asynchronous (ASM) / Rear - Permanently-Excited Synchronous (PSM) | std | — |
| EPA Estimated Range (Mi.): 348; 395 w/ultra package / 327; 360 w/ultra package / 326 (w/20" wheel) | std | — |
| EPA Rating: ZEV | std | — |
| Gear Ratios Final :1: 9.242 / 9.191 (front) / 9.242 (rear) | std | — |
| High Voltage Battery Limited Warranty: 8 Years / 100,000 Miles (whichever occurs first), 70% retention of battery capacity | std | — |
| Level 2 Charging (9.6 kW - 240V @ 40A): 11.5 hours | std | — |
| Max Charging Capacity AC / DC: up to 9.6 kW / 270 kW | std | — |
| More efficient regenerative one-pedal braking mode (upgraded B mode) | std | — |
| MPG/MPGe (City): 117; 134 w/ultra package / 109; 121 w/ultra package / 106 (w/20" wheel) | std | — |
| MPG/MPGe (Combined): 111; 127 w/ultra package / 105; 117 w/ultra package / 103 (w/20" wheel) | std | — |
| MPG/MPGe (Highway): 105; 120 w/ultra package / 101; 113 w/ultra package / 100 (w/20" wheel) | std | — |
| Nominal Horsepower (hp): 362 / 422 / 496 | std | — |
| Peak Power w/ Launch Control (hp): 375 / 466 / 543 | std | — |
| Top Track Speed (kph): 210 / 210 / 240 | std | — |
| Top Track Speed (mph): 130 / 130 / 149 | std | — |
| Transmission: Single-Speed | std | — |
Chassis10 differ · 10 listed
| Feature | Audi A6 e-tronA6 Sportback e-tron (RWD) RWD | Kia K5LXS FWD |
|---|---|---|
| Body Construction: Mixed steel/aluminum construction | std | — |
| Brake Construction: Front: Fixed caliper / Rear: Floating caliper with integrated electric parking brake | std | — |
| Front Brakes: Four-piston caliper 13.8" (350mm) ventilated steel discs / Four-piston caliper 15.7" (400mm) ventilated steel discs (S6) | std | — |
| High Performance Damper (HPD) shock absorbers | — | std |
| Parking Brake: Electro-mechanical | std | — |
| Rear Brakes: Single-piston caliper 13.8" (350mm) ventilated steel discs | std | — |
| Steering Ratio :1: 16.4 | std | — |
| Steering Type: Electromechanical progressive steering with speed-sensitive power assist | std | — |
| Suspension (standard): 5-link design front suspension // 5-link design rear suspension | std | — |
| Turning Circle (ft. Curb-to-Curb): 40.4 | std | — |
Cargo1 differ · 1 listed
| Feature | Audi A6 e-tronA6 Sportback e-tron (RWD) RWD | Kia K5LXS FWD |
|---|---|---|
| Trunk Volume / With seats folded (cu. ft.): 25.95 / 39.87 / 25.95 / 39.87 / 25.95 / 39.29 | std | — |
Highlighted rows are where the two differ. Wording is the manufacturer's own.
Safety record
NHTSA recalls, complaints, NCAPAudi A6 e-tron
Top recalls
No recalls on file.
Kia K5
Top recalls
No recalls on file.
Ownership
EPA, manufacturer warranty| Audi A6 e-tronA6 Sportback e-tron (RWD) RWD | Kia K5LXS FWD | |
|---|---|---|
| Price | $66,700 (base trim) | $27,690 (base trim) |
| Price range across trims | $66,700 – $79,600 6 trims | $27,690 – $33,790 4 trims |
| Powertrains | BEV | GAS |
| EPA configuration compared | A6 e-tron ultra | K5 w/Stop-Start |
| Combined mpg / MPGe | 127 | 30 |
| EPA annual fuel cost | $600 | $2,250 |
| EV range | 395 mi | — |
| Basic warranty | 4 yr / 50,000 mi | — |
| Powertrain warranty | — | — |
| Roadside assistance | 4 yr | — |
Common questions
Source: EPA, NHTSA and manufacturer press kitsWhich is better, the 2027 Audi A6 e-tron or the 2027 Kia K5?
The Kia K5 wins clearly, 80 to 72.1, on price, tech & comfort, safety. The Audi A6 e-tron is ahead on fuel & range and performance. Raise the fuel & range weight from 3 to 5 and it flips. On WhichTrim's default weights the 2027 Kia K5 scores 80 and the 2027 Audi A6 e-tron 72.1. The weights are yours to change — move what you care about and the verdict recalculates on the page.
Which is cheaper, the 2027 Audi A6 e-tron or the 2027 Kia K5?
The 2027 Kia K5 starts lower — $27,690 against $66,700, a gap of $39,010 at the trims compared here. Both are manufacturer MSRPs before destination, options and dealer charges.
Which has the better safety record, the 2027 Audi A6 e-tron or the 2027 Kia K5?
2027 Audi A6 e-tron: no NHTSA rating yet, grade A, 0 recalls. 2027 Kia K5: no NHTSA rating yet, grade A, 0 recalls. Crash ratings come from NHTSA's own tests; the grade is WhichTrim's read of the recall record, and the two can disagree.
What are the biggest differences between the 2027 Audi A6 e-tron and the 2027 Kia K5?
Where the 2027 Kia K5 wins: it lists 41 standard driver-assist features against 6, starts $39,010 lower ($27,690 against $66,700 base MSRP), and lists more comfort and tech equipment (49 points against 19 on the press-kit count, standard = 1, optional = ½). Where the 2027 Audi A6 e-tron answers: it is rated 127 combined against 30 (EPA mpg or MPGe) and costs $1,650 a year less to fuel on the EPA's estimate ($600 against $2,250). What they share: a Safety Signal of 100 and 35.2 in of rear legroom.