All three of these cars are largely the same, but while the Citigo has appealed to the 'value' end of the market, and the Up has offered a 'premium' experience, the Mii has been struggling to find the middle ground.
The Toca attempts to do this by offering more kit than the mid-spec Mii SE but, in the case of this three-door version, keeping its price less than £10,000 (it's £9995). That means you get rear parking sensors and the natty Garmin sat-nav/infotainment system for a premium of about £450 more than the SE.
It isn't quite as clear cut as that, though, because that price difference is based on the fact that rear parking sensors only come as part of the SE's Convenience Pack – a £530 option that also brings front foglights, cruise control and a trip computer – and none of these elements are included (or available at all) on the Toca.
What's the 2014 Seat Mii Toca like to drive?
The Mii Toca is availablen only with the 59bhp version of the car's 1.0-litre three-cylinder engine. It's quick enough around town, and will cope with motorways. too, as long as you don't expect it to race up to 70mph with anything approaching genuine haste. The 59bhp motor takes 14.4sec to haul the Mii up to 62mph, and it feels like it.
Just like the Skoda and the Volkswagen, the Mii rides the city bumps and potholes very well. There's some body roll, but the Seat generally feels as composed as much larger cars in most types of driving. The steering is also well weighted, so you feel confident making direction changes at any speeds.
Refinement is generally good, with little engine noise around town and wind noise being the only complaint at speed.
What's the 2014 Seat Mii Toca like inside?
For a car with such tiny dimensions, there's plenty of room for four adults in the cabin – there's even enough rear headroom for six-footers, although legroom might be a problem if front passengers are equally lofty. A Hyundai i10 is better in this respect.
The 238-litre boot is decent, too, although there is a drop from the boot lip to the floor, and there's a large step when the rear seats are folded down flat.
The cabin doesn't look or feel as nice as the VW Up's but Toca trim does bring a blue highlight to inject a bit more colour into the neat-looking fascia. The Garmin sat-nav system is excellent; some of its commands require you to press rather small on-screen buttons, but it's quick to use and has a comprehensive range of features for such a small car.
Should I buy one?
Once again, the Mii's biggest problem is the Skoda Citigo. Should you decide that the 59bhp three-door version of this car is your preferred option – and we can certainly see its appeal – then you should start looking closely at the specs across the Skoda, Seat and VW versions of the same vehicle.
Do that and you'll realise that the Skoda Citigo Elegance Greentech brings the same mechanical package, plus sat-nav, Bluetooth, front foglights, heated front seats, and electrically adjustable and heated door mirrors, but costs a couple of hundred pounds less.
Sure, you'll be missing out on the rear parking sensors, but even then, you can add them to the Skoda and end up with a car that's much better equipped, even cleaner (it emits 95g/km) and just as good to drive, for barely £100 more. Appealing though the Mii is, then, your money would be better spent elsewhere.
What Car? says...
Engine size 1.0-litre petrol
Price from £9995
Torque 70lb ft
0-62mph 14.4 seconds
Top speed 99mph
Fuel economy 62.8mpg