If you’re browsing the used-car market or planning a research deep-dive, Audi’s 2018 lineup is a good example of variety within a single model year—sedans, SUVs, coupes and sporty hatchbacks each have distinct appeal depending on budget and priorities. Knowing what’s in the range helps you narrow choices quickly.
There are 33 2018 Audi Models, ranging from A1 to TTS. For each model, information is organized by Body style, Key trims, and Engine & economy—you’ll find below.
Which 2018 Audi models offer the best fuel economy?
Smaller models and those with four‑cylinder turbo engines generally return the best fuel figures; conversely, performance variants and larger SUVs tend to consume more. Check the Engine & economy column below for exact mpg or l/100 km numbers per trim before deciding.
How should I pick between sportier trims like the TTS and practical models like the A1?
Decide whether performance, passenger/cargo space, or running costs matter most: compare Body style and Key trims for features and seating, then confirm power and efficiency in Engine & economy. A test drive and inspection will reveal how each model fits your daily needs.
2018 Audi Models
| Model | Body style | Key trims | Engine & economy |
|---|---|---|---|
| A1 | hatchback | Sport, Design, S line | 1.0L I3 115 hp; 37/47 mpg |
| A3 | sedan/hatchback | Premium, Premium Plus, Prestige | 2.0L I4 184 hp; 25/36 mpg |
| A3 Sportback e-tron | hatchback (PHEV) | e-tron plug-in hybrid | 1.4L I4 + electric 204 hp; 83 MPGe/34 mpg |
| S3 | sedan/hatchback | S trim, Performance pack | 2.0L I4 292 hp; 22/31 mpg |
| RS3 | sedan/hatchback | RS performance | 2.5L I5 400 hp; 20/28 mpg |
| A4 | sedan | Premium, Premium Plus, Prestige | 2.0L I4 188 hp; 24/34 mpg |
| A4 Allroad | wagon | Allroad quattro | 2.0L I4 188 hp; 23/31 mpg |
| S4 | sedan | S sport trim | 3.0L V6 349 hp; 20/28 mpg |
| RS4 Avant | wagon | RS performance | 2.9L V6 biturbo 444 hp; 18/25 mpg |
| A5 | coupe | Sport, S line, Prestige | 2.0L I4 188 hp; 24/34 mpg |
| S5 | coupe | S sport | 3.0L V6 349 hp; 20/30 mpg |
| RS5 | coupe | RS performance | 2.9L V6 biturbo 444 hp; 19/27 mpg |
| A6 | sedan | Premium, Premium Plus, Prestige | 2.0L I4 252 hp; 24/33 mpg |
| A6 Allroad | wagon | Allroad quattro | 3.0L V6 333 hp; 20/27 mpg |
| S6 | sedan | S sport | 4.0L V8 biturbo 450 hp; 18/26 mpg |
| RS6 Avant | wagon | RS performance | 4.0L V8 biturbo 560 hp; 15/22 mpg |
| A7 | liftback | Sport, S line, Prestige | 3.0L V6 333 hp; 21/30 mpg |
| S7 | liftback | S sport | 4.0L V8 450 hp; 18/25 mpg |
| RS7 | liftback | RS performance | 4.0L V8 560 hp; 16/24 mpg |
| A8 | sedan | Premium, Executive | 3.0L V6 335 hp; 20/28 mpg |
| S8 | sedan | S sport | 4.0L V8 520 hp; 15/22 mpg |
| TT | coupe | Base, S line | 2.0L I4 220 hp; 23/33 mpg |
| TTS | coupe | S sport | 2.0L I4 288 hp; 22/31 mpg |
| TT RS | coupe | RS performance | 2.5L I5 400 hp; 20/29 mpg |
| R8 | coupe/convertible | V10, V10 Plus | 5.2L V10 540 hp; 14/22 mpg |
| Q2 | crossover | Sport, Design | 1.4L I4 150 hp; 28/36 mpg |
| Q3 | crossover | Premium, S line | 2.0L I4 200 hp; 22/30 mpg |
| RS Q3 | crossover | RS performance | 2.5L I5 394 hp; 19/27 mpg |
| Q5 | SUV | Premium, Premium Plus, Prestige | 2.0L I4 252 hp; 22/28 mpg |
| SQ5 | SUV | S sport | 3.0L V6 354 hp; 20/27 mpg |
| Q7 | SUV | Premium, Prestige | 3.0L V6 333 hp; 19/25 mpg |
| SQ7 | SUV | S sport | 4.0L V8 biturbo 500 hp; 16/22 mpg |
| Q7 e-tron | SUV (PHEV) | e-tron plug-in hybrid | 3.0L TDI + electric 373 hp; 64 MPGe/29 mpg |
Images and Descriptions
A1
Entry-level hatchback sold mostly in Europe. Compact, efficient city car with a surprisingly premium interior, customizable trims and Audi tech. Popular with urban buyers and not offered in the U.S. as a 2018 model.
A3
Compact Audi available as sedan and Sportback hatch. Balances fuel economy, tech and premium fit-and-finish. Widely sold globally in 2018 and serves as a common entry point into Audi ownership across markets.
A3 Sportback e-tron
Plug-in hybrid version of the A3 Sportback offering short electric range and efficient combined driving. Sold mainly in Europe in 2018, ideal for buyers wanting a premium compact with emission-saving EV capability.
S3
Sport-tuned compact available as sedan or hatch with quattro all-wheel drive. Delivers sharper handling, stronger acceleration and upgraded interior bits while remaining practical for everyday driving in many markets.
RS3
High-performance compact with a distinctive five-cylinder engine and aggressive chassis tuning. Offers blistering acceleration, strong brakes and exclusive styling; popular among enthusiasts in Europe and select global markets in 2018.
A4
Compact executive sedan that blends comfort, technology and efficient engines. A staple of Audi’s lineup in 2018, available in many markets and offered in Avant wagon form in regions outside the U.S.
A4 Allroad
Raised, ruggedized wagon version of the A4 with quattro AWD and protective cladding. Targets buyers who want wagon practicality with light off-road capability; sold mainly in Europe and other markets where estates are popular.
S4
Performance-oriented A4 variant with a stronger V6, sport suspension and distinctive styling. Balances everyday usability with sharper performance for buyers wanting a sportier executive sedan.
RS4 Avant
High-performance wagon combining family-friendly cargo space with sports-car pace and quattro grip. Offered primarily in Europe as an enthusiast-focused, practical performance vehicle in 2018.
A5
Stylish two-door coupe (and available Sportback and Cabriolet bodies) that emphasizes design and refinement. Popular for buyers seeking a sportier, more design-focused alternative to the A4 sedan.
S5
Sport variant of the A5 with a responsive V6, tuned chassis and upgraded interior trim. Blends performance with daily comfort in coupe, Sportback and Cabriolet forms.
RS5
High-performance A5 with serious power, sports chassis and aggressive styling. Targets buyers looking for near-supercar pace in a more usable coupe or Sportback body in 2018.
A6
Mid-size executive sedan offering roomy interior, advanced tech and a range of efficient engines. Sold globally in 2018 and available in markets with multiple petrol and diesel choices.
A6 Allroad
Raised and rugged A6 wagon with quattro AWD and extra cargo versatility. Popular in Europe for buyers wanting luxury touring capability with light off-road resistance.
S6
High-performance A6 variant delivering strong V8 power, sport-tuned suspension and upscale interior upgrades. Aimed at drivers seeking executive comfort with serious performance.
RS6 Avant
Brutal performance wagon combining immense power, all-wheel drive and everyday practicality. Sold primarily in Europe and prized by drivers who want sports-car pace with cargo room.
A7
Four-door luxury liftback with coupe-like styling, generous interior comfort and tech. Positioned between the A6 and A8 for buyers wanting design flair with executive-level amenities.
S7
Performance-rich A7 variant with a powerful V8, sharper handling and sport-focused interior touches. Offers muscular performance without sacrificing the A7’s striking styling and cabin refinement.
RS7
Top-tier performance liftback delivering supercar-like acceleration with four-door practicality. Popular among buyers seeking extreme performance paired with luxury and daily usability.
A8
Flagship full-size sedan packed with cutting-edge tech, high-quality materials and quiet refinement. Aimed at luxury buyers worldwide and available with high-end options and advanced driver assists in 2018.
S8
High-performance version of the A8 with a potent V8, sport-tuned systems and exclusive luxury features. Blends flagship comfort with strong straight-line performance for discerning buyers.
TT
Compact sporty coupe (also offered as a roadster) with sharp styling, light weight and a driver-focused interior. Appeals to buyers wanting a premium small sports car with usable daily manners.
TTS
Sportier TT with more power, firmer suspension and distinctive S styling. Provides stronger performance without stepping up to the full RS model’s intensity.
TT RS
Extreme TT variant with a high-revving five-cylinder, aggressive chassis tune and bold visual cues. Designed for enthusiasts seeking track-capable performance in a compact Audi package.
R8
Audi’s mid-engined supercar with a naturally aspirated V10, lightweight construction and exotic styling. Offered as both coupe and Spyder; a halo model showcasing Audi performance and engineering.
Q2
Small premium crossover aimed at urban buyers seeking elevated driving position and Audi style in a compact footprint. Sold in Europe and other global markets but not in the U.S. mainstream lineup in 2018.
Q3
Subcompact luxury crossover offering versatility, elevated seating and available quattro AWD. Popular in global markets as an easy-to-live-with compact SUV with Audi badge appeal.
RS Q3
High-performance compact SUV with a potent five-cylinder engine, sporty chassis and aggressive styling. Targets enthusiasts wanting hot-hatch levels of performance in an SUV silhouette.
Q5
Compact luxury SUV that blends practicality, refined interiors and a range of efficient engines. One of Audi’s best-selling SUVs globally in 2018 with strong family appeal.
SQ5
Sporty Q5 variant with a stronger V6, firmer suspension and distinctive styling cues. Offers quick acceleration with the comfort and versatility buyers expect from an SUV.
Q7
Three-row midsize luxury SUV offering space, tech and towing capability. Sold widely around the world in 2018 and positioned as a family-oriented premium vehicle with available diesel engines in many markets.
SQ7
High-performance Q7 with a powerful engine, sport-tuned dynamics and upscale features. Delivers big-SUV practicality while offering surprising straight-line speed and strong towing ability.
Q7 e-tron
Plug-in hybrid variant of the Q7 combining diesel and electric drive for efficient long-distance and EV-capable urban motoring. Mostly sold in Europe and aimed at eco-conscious premium buyers in 2018.
