Here are some non-Miata cars that are rear-wheel drive (RWD), efficient, manual, and relatively affordable:

Toyota 86/Subaru BRZ:

RWD: The Toyota 86 and Subaru BRZ are compact sports cars with a rear-wheel-drive layout, providing a fun and engaging driving experience.

Efficient: These cars are known for their balance between performance and fuel efficiency, making them suitable for daily driving without compromising too much on gas mileage.

Manual Transmission: Both the Toyota 86 and Subaru BRZ offer a manual transmission option for enthusiasts who prefer a more involved driving experience.

Affordability: While prices may vary, these cars are generally more affordable than many other sports cars, providing good value for the performance they offer.

Mazda MX-5 RF (Retractable Fastback):

RWD: The Mazda MX-5 RF, like the Miata, is a small convertible sports car with a rear-wheel-drive layout, ensuring a spirited driving experience.

Efficient: Mazda has focused on lightweight design and fuel efficiency, making the MX-5 RF an efficient choice for those looking for a balance between performance and fuel economy.

Manual Transmission: The MX-5 RF comes with an available manual transmission, allowing drivers to enjoy the thrill of shifting gears manually.

Affordability: The MX-5 RF tends to be more affordable than many other sports cars, offering a great package for driving enthusiasts on a budget.

Ford Mustang (Base Ecoboost):

RWD: The Ford Mustang, particularly the base Ecoboost model, features a rear-wheel-drive layout, providing a classic American muscle car driving experience.

Efficient: The Ecoboost engine provides a more fuel-efficient alternative than the V8 models, making it a more economical choice for daily driving.

Manual Transmission: The Ford Mustang is available with a manual transmission option, allowing drivers to have more control over their driving experience.

Affordability: The base Ecoboost model is often more affordable than the higher-performance V8 variants, making it accessible to a wider range of enthusiasts.

Chevrolet Camaro (Base 2.0T):

RWD: The Chevrolet Camaro, specifically the base 2.0T model, comes with a rear-wheel-drive setup, delivering a powerful and dynamic driving experience.

Efficient: The base 2.0T engine is more fuel-efficient compared to the higher-displacement V8 options, providing a good balance between performance and efficiency.

Manual Transmission: The Camaro is available with a manual transmission, catering to drivers who prefer a more involved and traditional driving experience.

Affordability: The base 2.0T model is often more budget-friendly than the higher-trim, more performance-oriented versions of the Camaro.

Remember that pricing and availability may vary based on location and model years, so checking with local dealerships for the most up-to-date information is recommended.