Every Jura super-automatic includes a built-in conical burr grinder. But not all Jura grinders are created equal. The grinder is the single most important component for espresso quality - it determines particle consistency, extraction evenness, and ultimately how your coffee tastes.
Here is how Jura’s three grinder generations compare and which models use each one.
Jura Grinder Types at a Glance
| Feature | Aroma G2 (previous gen) | Aroma G3 most common | P.R.G. (flagship) |
|---|---|---|---|
| Burr type | Conical steel | Conical steel (refined) | Conical steel (advanced) |
| Grind settings | 5 levels | 6 levels | 6 levels (auto-adjusting) |
| Noise level | Moderate | Quieter | Quietest |
| Particle consistency | Good | Very good | Excellent |
| Bean recognition | No | No | Yes |
| Hot and cold grind profiles | No | No | Yes |
| Found in | ENA 4, D6, older models | E6, E8, S8, GIGA 6 | Z10 only |
Aroma G2 - The Entry-Level Grinder
The Aroma G2 is Jura’s previous-generation grinder found in their entry-level and older models. It uses conical steel burrs with 5 adjustable grind levels. The G2 produces good espresso for everyday drinking but has slightly less particle consistency than newer grinders. Noise is moderate compared to the G3.
Models with Aroma G2: Jura ENA 4, Jura D6, and most Impressa-era machines (J9, Z6, etc.)
If you own a machine with an Aroma G2 grinder, it still makes solid espresso. But if you are upgrading, the jump to an Aroma G3 model is noticeable in grind consistency and noise reduction.
Aroma G3 - The Sweet Spot
The Aroma G3 is Jura’s current workhorse grinder and the one found in their most popular models. It refines the G2 design with tighter tolerances, adding a 6th grind level and producing noticeably more uniform particle sizes. The result is better extraction, richer crema, and a quieter grinding cycle.
Models with Aroma G3: Jura E8, Jura S8, Jura E6, GIGA 6
For most buyers, the Aroma G3 is the right grinder. It produces excellent espresso and is available in machines across multiple price points. The E8 paired with the Aroma G3 is our top overall recommendation.
P.R.G. (Product Recognizing Grinder) - The Flagship
The P.R.G. is Jura’s most advanced grinder, exclusive to the Z10. “Product Recognizing” means the grinder automatically adjusts its grind profile based on whether you are making a hot or cold drink. Cold extraction requires a different grind fineness than hot espresso, and the P.R.G. handles this automatically.
Models with P.R.G.: Jura Z10 only
The P.R.G. also offers the tightest particle consistency in Jura’s lineup, producing the most even extraction. If you make cold brew regularly and want the absolute best grinder Jura offers, the Z10 is the only option.
Which Grinder Do You Need?
The grinder matters, but it is one of several factors that determine your espresso quality. Here is a practical guide:
- Aroma G3 is enough for most people. The E8’s Aroma G3 produces excellent espresso that satisfies even demanding drinkers. Unless cold brew is essential, you do not need the P.R.G.
- Upgrading from G2 to G3 is worth it. If you have an older Jura with an Aroma G2 (or the original Aroma+ in Impressa models), moving to an E8 or S8 brings a real improvement in grind quality and noise.
- P.R.G. is for Z10 buyers. The P.R.G. is a genuine advantage for cold brew. For hot drinks only, the Aroma G3 comes close enough that the $1,000+ price difference is hard to justify on grinder quality alone.
For a deeper look at grind settings and how to dial them in, read our espresso settings guide. To compare specific models, see the E8 vs Z10 comparison or browse all Jura comparisons.