A built-in microwave can be one of the most useful appliances in a modern kitchen, especially when it combines everyday microwave convenience with the ability to grill and crisp food. The Grundig GMI12311B Microwave Grill takes that approach while keeping the design clean and integrated.

With a 25-litre cooking cavity, five microwave power levels, eight automatic cooking programmes, and a 1kW grill, the GMI12311B is designed to handle everything from quick reheating and defrosting to browning and crisping meals. Grundig also gives it a sleek black finish that fits naturally into contemporary built-in kitchens.

First Impressions

The GMI12311B is designed to blend into a fitted kitchen rather than look like a countertop appliance that has simply been placed inside a cabinet.

Its black exterior, glass door, and 595mm-wide built-in format give it a streamlined appearance that can work particularly well alongside a matching built-in oven. The appliance measures 388mm high and 400mm deep, making it a relatively compact option for a dedicated microwave position.

The 25-litre cavity is also a useful middle ground. It provides enough room for everyday dishes and reheating without taking up the space associated with a larger conventional oven.

Microwave Performance and Power

At the heart of the GMI12311B is a 900W microwave, with five selectable power levels. That gives you greater control than a basic single-power microwave, allowing you to adjust cooking intensity depending on what you’re preparing.

The different power levels are particularly useful when you’re working with foods that need gentler heating. Instead of simply blasting leftovers at maximum power, you can select a lower setting for more controlled reheating or defrosting.

A dedicated defrost function adds another layer of convenience, while Quick Start provides an easy way to begin microwave cooking without navigating through multiple settings.

Eight Auto-Cook Programmes

One of the GMI12311B’s most convenient features is its eight automatic cooking programmes.

Grundig’s automatic cooking menu is designed to take some of the guesswork out of preparing common foods. The appliance can automatically determine appropriate cooking settings for selected dishes, making it particularly useful for busy weeknight cooking.

For anyone who doesn’t want to calculate cooking times and power levels manually every time they use a microwave, this is a welcome feature.

The appliance also supports auto-step cooking, allowing different cooking stages to be programmed into a sequence.

The Grill Adds More Versatility

The feature that separates this appliance from a conventional microwave is its integrated grill.

The 1kW grill can be used to add colour and crispness to food, making it useful for dishes where microwave heating alone would leave the surface soft. Grundig specifically positions the grill as a way to give microwave meals a more appealing, crispy finish.

The appliance also supports combination cooking modes. According to the product manual, users can combine microwave and grill cooking in different proportions, allowing the microwave to speed up cooking while the grill contributes browning and surface texture.

That makes the GMI12311B more versatile than a microwave that is limited to reheating, defrosting, and basic cooking.

Simple Digital Controls

The GMI12311B uses a digital programmer for selecting cooking functions and times. Its Quick Start feature is particularly convenient when you’re in a hurry and simply want to begin heating immediately.

The interface isn’t overloaded with unnecessary smart-home features or complicated menus. For an appliance whose primary job is quick and convenient cooking, that simplicity can be a genuine advantage.

There’s also an electronic child lock, providing an additional safety measure for households with children.

Thoughtful Built-In Design

The GMI12311B is designed specifically as a built-in microwave, so aesthetics are an important part of the package.

The black finish and glass door give it a premium, minimalist appearance, while the interior light makes it easier to monitor food while it cooks. The door opens to the left, something worth considering when planning its position within your kitchen cabinetry.

Its 595mm width also makes it visually compatible with the standard proportions commonly used for built-in kitchen appliances.

Cleaning and Everyday Convenience

Microwaves can quickly become messy, particularly when reheating sauces, soups, or dishes with high moisture content. The GMI12311B’s relatively straightforward interior design should make routine wipe-downs manageable.

The removable glass turntable and support are dishwasher-safe according to the product manual, which is another useful detail for everyday maintenance.

That matters because an appliance designed for frequent use should be just as easy to maintain as it is to operate.

Grundig GMI12311B Review

What We Like

• 25-litre cooking capacity offers a useful balance of interior space and compact built-in dimensions.
• 900W microwave power provides fast everyday heating.
• Five microwave power levels give better control over cooking intensity.
• 1kW grill adds browning and crisping capabilities.
• Eight automatic cooking programmes make everyday preparation easier.
• Auto-step cooking allows multiple cooking stages.
• Dedicated defrost function.
• Quick Start is convenient for rapid reheating.
• Electronic child lock adds an extra safety feature.
• Black built-in design looks sleek and modern.
• Interior light makes it easier to monitor food.
• Three-year guarantee can be extended to five years free of charge after registration within 90 days of purchase, subject to Grundig’s terms.

What Could Be Better

• The 25-litre capacity may feel limiting for particularly large dishes.
• It is a microwave with grill rather than a full convection oven, so it isn’t a replacement for a dedicated oven when baking or roasting requires conventional oven functionality.
• Built-in installation requires appropriate cabinetry and planning.
• The left-hinged door needs to be considered when choosing its location.
• Users who mainly reheat food may not get much value from the additional grill functionality.

Overall Rating: ★★★★☆ 4.7/5

Who Is the Grundig GMI12311B For?

The GMI12311B makes the most sense for homeowners looking for a sleek built-in microwave that does more than simply reheat food.

It’s particularly appealing in contemporary kitchens where countertop space is limited and matching built-in appliances are preferred. The combination of microwave cooking, grilling, automatic programmes, and sequential cooking gives it enough versatility to become a genuinely useful part of a daily cooking routine.

It’s also a good choice for households that already have a full-size oven and want a secondary appliance for faster meals, reheating, defrosting, and crisping.

On the other hand, if you’re looking for a single appliance capable of replacing a conventional oven, this isn’t quite that product. The GMI12311B’s strengths are speed, convenience, and compact versatility, rather than full-scale oven functionality.

Final Verdict

The Grundig GMI12311B Microwave Grill gets the fundamentals right while adding enough versatility to make it more than an ordinary microwave.

Its 900W microwave, five power levels, eight automatic programmes, 1kW grill, Quick Start, defrosting, and auto-step cooking give it a strong feature set for everyday kitchen use.

What makes it especially attractive is the combination of those functions with a clean built-in design. It can sit neatly within a modern kitchen without sacrificing the convenience that makes microwaves so useful in the first place.

Overall, the GMI12311B is a well-balanced choice for anyone wanting a stylish built-in microwave with useful grilling capability and enough cooking flexibility to handle much more than reheating leftovers.